Only Tri-Ergon had now become a system project
comparable
perhaps only to Edison's electrification of theaters, streets, and resi- dential homes.
Kittler-Friedrich-Optical-Media-pdf
As Messter put it so beautifully, he employed "a cin- ematographic recording apparatus whose running gear was propelled by clockwork and whose visual field carries crosshairs, whereby a targeting set-up like that of the machine gun is to be arranged paral- lel to the visual axis.
" As you can see, the structural correspondence
between perspective and ballistics became a technological reality by World War I at the latest. Messter's ingenious construction, which photographed at least 7. 2 million square kilometers of combat area using millions of kilometers of roll film' (Zglinicki, 1979, p. 273), could only be improved by combining shooting and filming, serial death and serial photography, into a single act. This was accom- plished by a French reconnaissance pilot who relocated the visual and ballistic axis of both the machine gun and the camera to the axis of the propeller (Virilio, 1989, p. 18).
9 Kittler misquotes Zglinicki when he says that "millions of kilometers" of film were used in World War I. Zglinicki's actual figure was only 950,000 km,
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This coupling also took place in Germany. Guido Seeber, who built the Babelsberg studios in 1911 and filmed The Student of Prague there in 1913, was drafted two years later in 1915 and sent to the experimental seaplane station in Warnemiinde (not to say Peen- emiinde). There, he established at the same time a central educational film and photography hire service. Their first successful scientific film showed with the help of X-ray photography that countless airplane crashes were caused by lead balls built into the wooden propellers for balance; at high speeds these balls fly out and smash through the airplanes like bullets.
In a positive inversion of this negative test result, so to speak, Seeber also constructed a machine gun sight for fighter planes, which was supposed to optimize the machine gun firing rate. And just like the French reconnaissance pilot, Seeber combined this machine gun sight with a small film camera, which also shot film frames whenever the machine gun fired.
Strategically, therefore, filming and flying coincide. McLuhan sums this up succinctly in Understanding Media: "It was the photograph that revealed the secret of bird-flight and enabled man to take off" (McLuhan, 1964, p. 174). There was a reason why Marey had also studied the movements of bird wings and why photographers like Nadar had taken pictures from hot-air ballooons and passionately fought against zeppelins, supporting instead bird-like - or "heavier than air," as it was called at that time - plane constructions. Gabriele D'Annunzio, the decadent novelist and fighter pilot, already dem- onstrated in 1909 to a woman sitting next to him on an airplane that by approaching from the air the cathedrals and castles of Italy could be magnified or reduced by any amount and thus also visu- ally destroyed. This discovery, just before the outbreak of the First World War, which D'Annunzio himself only turned into a novel, also unleashed the tracking shots of the first world-famous period film Cabiria, which D'Annunzio contributed to as adviser and allegedly also screenwriter. During the war, his flight squadron "La Serenis- sima" proceeded to fly from Venice across the Alps (which was quite dangerous at that time) to mount an attack on Vienna. These attacks did not consist of bombs, as D'Annunzio explained to the Viennese on propaganda flyers dropped on the city, but rather the Austrians were permitted to remain alive so that they would be able to over- throw their emperor more effectively.
Historians only later recognized that the Viennese-Venetian air war scenario had already been attempted half a century before D'Annunzio, only I I I reverse. You will recall that Field Marshal
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Lieutenant Baron von Uchatius started projecting stroboscope draw- ings in 1841, and somewhat later he also began manufacturing explo- sive Uchatius powder. In 1849, after a civil revolution that also promised freedom to the Italian and especially the Venetian subjects of Austria-Hungary, an Austrian General based in Mestre besieged the rebellious Venetian republic of Serenissima. To the general's chagrin, it appeared that Venice's lagoon prevented it from being captured or even fired on by the artillery. That is, until Uchatius and his brother, two artillery lieutenants from Vienna, then made the world-historical suggestion of attacking from the air: bombs "were to be carried over the city in hot-air-filled balloons made of paper, which would be made to rise if wind conditions were favorable. Prior to being released from the balloon, the 30 pound bomb was supposed to be set [with a time fuse] according to the strength of the wind at that moment. If everything went according to plan, therefore, the impact of the explosives had to take place ronghly where it was expected," becanse the "range" of the bombs "far exceeded the range of artillery at that time" (Knrzel-Runtscheiner, 1937, p. 48). The wind actually very rarely helped, bnt between June and July 1849 a few of the 110 Uchatins bombs manufactured in Vienna did indeed explode over the astonished Venetians. A field marshal lieutenant, who invented cinematic projection, thus also had to invent the projection or throw- ing of projectiles.
Once these bombs or later planes were manned, the cinematic high-angle shot was born. So World War I not only produced the new professions of reconnaissance and bomber pilots, bnt also a new kind of film director. These directors had all previously been fighter pilots, and on the basis of their technologically altered visual perception they also revolntionized the entertainment medium of film. Jean Renoir, the director of Grand Illusion, was a fighter pilot, just like Howard Hawks, who filmed his war memories in 1930 as Dawn Patrol. The clearest example of this nexus between air combat and cinema, however, was Dziga Vertov, the Soviet director, film theorist and above all Lenin's propaganda conductor. Vertov's so-called "rules" for experimental film, which cancelled out all bourgeois infatuation with images, began first with a "General instruction for all tech- niques: the invisible camera. " Eight individual points then followed. No. 1 was: "Filming unawares - an old military rule: gauging speed, attack. " No. 6: "Filming at a distance. " No. 7: "Filming in motion. " And finally No. 8: "Filming from above" (Vertov, 1984, pp. 162-3).
So much for Vertov's combat rules as general staff officer - and now, in a free adaptation of Ernst Junger, the aerial combat film as
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mner expenence of a Vertov demoted to become his own front-line soldier:
I am the camera's eye. I am the machine which shows you the world as I alone see it. Starting from today, I am forever free of human immobility. I am in perpetual movement. r. . . ] I approach and draw away from things - I crawl under them - I climb on them - Jam on the head of a galloping horse - I burst at full speed ioto a crowd - I run before running soldiers - I throw myself down on my back - I rise up with the aeropianes - I fall and 1 fly at one with the bodies falling or rising through the air. (Virilio, 1989, p. 20)
In other words, the experimental and entertainment films made with a camera that was no longer only mobile, like Griffith's, but also truly unleashed through tracking shots, simply converted the perceptual world of World War I into mass entertainment. The same thing also happened incidentally in the new media art form known as the radio play, which European civilian radio developed in 1924. And because the war dead returned as an acoustic barrage in postwar radio plays and optical air combat in postwar films, the large cinema palaces between Hollywood and Berlin were also constructed like giant mau- soleums. After the European monarchies fell and the old conspiracy between state and church propaganda disintegrated, these cinema palaces became churches of state propaganda that no longer praised a king by the grace of God, but rather (to adapt Lenin freely) war technology and electrification (Virilio, 1989, p. 28).
But it seems to be a law of media history (at least for Berliners) that new applications are secondary compared to new circuit technology. The lessons that film directors learned from World War I pale before the lessons learned by electrical engineers.
The lesson was that film could stop being silent. The technologies of World War I led to sound film, which leads us to the next chapter of these lectures.
3. 2. 4 Sound Film
The history of sound film has to begin with the assertion that silent film was never silent. Edison had already designed a link between the kinetoscope and the phonograph, which could have been built at a pinch despite problems with sound recording from a distance and synchronization. Many hobbyists and tinkerers followed Edison's lead and attempted to couple a half-mechanical, half-electrical optics
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with a purely mechanical acoustics prior to World War I, but without any appreciable results. There were also experiments that attempted to connect silent film and electromagnetic sound recording, namely Poulsen's telegraphone. Although these experiments did not yield any concrete snccesses, they were theoretically significant because they established the principle of magnetic audiotape, which was ready to go into production during World War II. With the audiotape and the cassette, sound recording acquired for the first time the same material format as film: as a roll that allowed variable time axis manipulation, unlike the phonograph and the gramophone. Not only are time rever- sals possible, as with Edison, but also stop tricks, cuts, and montages, as with Melies. The simple manipulable acoustics of audiotape led to rock music, as you know, which could then in tum be coupled with manipulable videotapes, and the video clip was born.
But for us, those are all still musical dreams of the future. In the non-experimental everyday lives of people prior to 1929, silent film was never silent simply because films were never presented without some form of accompaniment. The cheapest form was the film explainer, who was often recruited (as we can gather from contem- porary adverts) from among the academic proletariat, and who would explain the plot of the film to the spectators while it was playing. Cinemagoers, who had always already been listeners and readers, needed training in the new semiotics of film, which essentially con- sisted of cuts and montages and thus empty spaces. Kurt Pinthus' Das Kinobuch (The Cinema Book), which was published by the expression- ist in 1913 and is full of screenplay proposals by his novelist friends, shows what an intellectual step it was to demand films suitable to the medium - film plots, in other words, that were intelligible based on image sequences alone without any intertitles or film explainers. But this I'art pour I'art of silent film had not been commercially successful. More expensive forms of sound accompaniment saw to that: music either from records or living musicians, who often also had the honor of generating theatrical sound effects fitted to the scene in addition to sounds on the piano. As a synthesis of two contradictory elements, Greek atmosphere and media-technical noise, Richard Wagner in particular triumphed in the cinema. Wagner not only invented the darkening of the auditorium, but also a kind of music that was itself noise. Printed piano score excerpts from Wagner's works, such as
Liebestod and The Ride of the Valkyries, accompanied films long before Apocalypse Now, where The Ride of the Valkyries was no longer shown as a lanterna magica effect, as it was in Wagner's opera in 1876, but rather as a helicopter attack in the Vietnam War.
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This brings us back to war and its innovations. In a word: World War I transformed Edison's simple light bulb into the electron tube, which made the live musical accompaniment of silent films obsolete. I am interested in the historical development of this technical wonder because the tube allowed for the possibility of synchronized film soundtracks and television up to the present day. It was not replaced until the development of contemporary LCD displays and other semi- conductor technologies.
The electron tube, as I said, emerged from Edison's simple light bulb, which allows me to bring the history of lighting to a close. Edison had methodically searched for a cheap and safe light - so methodically that he brought every conceivable type of tropical wood to his laboratory asa possible filament for his bulb. The acciden- tal combination, on which Daguerre had still subsisted, was thus systematically eradicated. Edison would have been able to electrify America after a couple years of research if a considerably more pow- erful competitor named Westinghouse had not replaced his direct current system with an alternating current system. On the other hand, Edison's discovery that light bulbs also work as electron tubes, as they emit ions under electrical voltage, was made entirely in passing. He was also unable to do anything more than have this so-called "Edison effect" named after him simply because he knew nothing about theoretical physics.
For this reason, a physics professor at the new and very modern Reichsuniversitiit in Strasbourg named Ferdinand Braun was the first to discover a possible application of the Edison effect in 1897. He deflected the electron beam inside the tube with electromagnets, which were in turn attached to the general alternating voltage of the Strasbourg power grid, and sent it to a phosphorescent screen. The controlled beam - the last and most precise variant of the actively armed eye - then inscribed the visible graphic sine wave of an alter- nating power supply on the screen. Braun had invented the oscil- loscope. When his assistants later suggested to him that the electron beam should project beautiful images rather than mathematical func- tions, Braun rejected this first notion of television receiver tubes. He was "personally surprised" that Westinghouse's alternating power grid had not generated any ugly jagged peaks or rectangles, but rather an "ideal sine wave" (Kurylo, 1965, p. 137). Oscillograph means "vibration writer," and it is therefore the electronically per- fected variant of all the movement writers, from Scott to Marey, that led to the writing of sounds and images. You will notice that the television played back equations rather than film characters when
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it first began with Ferdinand Braun. It will possIbly do so again at the end.
Braun's tube was not crucial for film and radio tecbnology, however, but rather another tube variant: the so-called triode. Lee de Forest in Palo Alto and Robert von Lieben in Vienna simultaneously conceived the idea of building tubes out of two electrical circuits, one controlling and the other controlled. Two mputs were needed along with a general ground return, and it was therefore called a triode or three-way in the artificial Greek of technology. According to Pynchon's brilliant commentary, this separation of control circuit and output circuit in 1906 solved a fundamental problem of the twentieth century: that of control. Triodes were actually more bulky, they were more sensitive to heat, and they required more voltage than the transistors that have replaced them since 1947, but they were also unbeatably economical. In other words, a variably small control current, which assumed the function of Braun's electromagnets, could switch variably large output currents on or off, thus amplifying or weakening it. Thus, the electron tube first decoupled the concept of power from that of physical effort. But because power does not simply have negative effects, according to Foucault's thesis, the tube is also economically still insufficiently described. Immediately before the outbreak of World War I, de Forest discovered for the allies and Alexander Meillner for the central powers that tubes not only amplify but also provide a new type of power called feedback. When the output current of a triode is steered in the opposite direction of the control grid - when a voltage decrease in the first circuit thus corre- sponds to a voltage increase in the second circuit - negative feedback can be generated by leading the output signal, which for physical reasons is always delayed for fractions of a microsecond, back to the control circuit. The entire feedback system begins to oscillate between the minimum and maximum voltage without breaking up the oscilla- tion. In other words, it becomes a high-frequency transmitter, which must then only be coupled with a low-frequency amplifying tube
in order to send radio or television signals. In the first step, after they are converted to electricity, the acoustic or optical data signals are variably increased through low-frequency amplification. In the second step, the data signals become transmissible without wires over variable distances by modulating them on a high carrier frequency.
As the basic circuit of microphones and radio transmitters, this was already clear in 1913. But World War I provided new applications for the technology and the means for its mass production. Trenches brought an end to the possibility of commanding soldiers from a
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distance through optical or acoustic signals, yet this was precisely why a need for electronic feedback between invisible fronts and equally invisible control centers emerged. The first radio transmitters only served to entertain radio operators with music in exceptional cases, and eventually this was officially forbidden as a "misuse of army equipment. " But to a greater degree they were used to manu- facture feedback loops between ground personnel and reconnaissance flyers, who were told over the radio which enemy objects were invis- ible from the ground and still needed to be photographed or filmed.
This high-frequency military technology led to the worldwide explosion of electronics companies. Five years later, and again through the misuse of army equipment, the national radio institu- tions of Europe and the commercial stations of the USA emerged, and this was followed a decade later by the first television transmitter.
But low-frequency military technology also had consequences for entertainment electronics. The triumph of amplifier tubes allowed electronics companies to revolutionize Edison's and Berliner's old- fashioned mechanical sound recording technology. AT&T in the USA and Siemens & Halske in Germany wired a record player with a pick-up and electrically controlled speakers. This also resolved the problem that Edison's sound recording system failed to remedy in the Black Mary studio. The trumpet of the phonograph worked only when it was held directly in front of the actors' mouths, and it could thus embarrassingly be seen in the film that was being made at the same time. Tube amplifiers first made media acoustics into a sixth sense that could match up to the sixth sense called the camera.
Sound film was developed simultaneously in Germany and in the USA immediately after World War I, but it is completely senseless, at least on the American side, to list the individual inventors by name. It is enongh to know that Warner Brothers was in serious financial trouble compared to the competition, and for this reason they reached for the life saver of sound film. The leading American electronics laboratory, AT&T's Bell Labs, gave the technically clue- less Sam Warner a hand. After the record had been electrified, AT&T was also able to offer Warner Brothers a special model: a huge record that could be synchronized with the silent film and broadcast in the cinema hall using an amplifier and loudspeaker. This vitaphone system was and remained a patent of Western Electric.
For this reason, it was useless to interpret or explain films any more. Becanse the content of a medinm is always another medium, sonnd films simply enhanced the reputation of the electronics compa- nies that had made them possible. The first sound film in 1929 was
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not called The Jazz Singer by chance. A Jewish ex-chOIrboy, who had sung with religious wise men in synagogues in New York as a child, defects to the American media after puberty and becomes a jazz singer (at least that is what white people called it in 1929). It breaks the heart of his pious father, who had not yet been disabused of his Mosaic faith by the melting pot of New York. The jazz singer is in the middle of a concert when he receives the news that his father is dying - let us say of heart failure - and he strikes up an old Jewish song that brings the entire audience to tears. Let us rather say: the recently electrified record companies, which are on the hunt behind the backs of all concert-goers, have a new hit in record sales. The Jazz Singer implies, therefore, that with the introduction of sound film Hollywood became a branch of electrical companies like Western Electric or General Electric, which possessed both record companies and radio stations at the same time and which, in turn, were only branches of large banks like Rockefeller or Morgan (Faulstich, 1979, p. 160).
In Germany, the development of sound film proceeded more sys- tematically and on a much smaller scale. After losing the war, there was hardly any money, and instead demobilized army radio equip- ment stood around everywhere in 1919. In only four years, the signal corps had increased from 3,000 to almost 300,000 men. But even with misused army equipment, it was still possible to develop the very first sound film system without the use of records.
The developers of this wondrous work called it Tri-Ergon, which seems reminiscent of the triode tube but was actually intended to combine the names of the three developers - Hans Vogt, Joseph Masolle, and Dr. Joseph Engl - into a single anonymous "work of three. " Luckily Vogt, the main player, left his memories to the German Museum in Munich. His "first contact with silent film" took place in 1905, when he was a 1S-year-old peasant boy and he saw documentary films from the ongoing Russo-Japanese war in the cin- ematograph. "Eight years later," when he was already serving in the imperial navy at the experimental radiotelegraphy station in Kiel, the German auteur film had replaced the documentary cinematograph. Vogt enjoyed the "beautiful, highly dramatic" film The Student of Prague, as Evers and Seeber had just filmed it. However, there were two things that disturbed the young radio technician, who had been entrusted with the latest AEG tubes: "in close-ups, the lips of the actors moved like ghosts," and "the comments of the explainer ruined the atmosphere" (Vogt, 1964, p. 7). As is usual with autobiog- raphies, Vogt claims that he would have immediately invented a new
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media system If only World War I had not broken out. Four years later, partly at the front and partly at the high-frequency laboratory of a certam Dr. Seibt in Berlin, Vogt took part in the ether war:
Soon I was active on the water, air, and earth fronts, soon again in the Berlin laboratory. A medium for communicating with buried trenches had to be created and tested. Radio direction finders and radio stations for the weather contingent zeppelins. The sad end of the war came. (Vogt, 1964, p. 7)
Vogt overcame this sadness while unemployed in postwar Berlin by once again returning to his film idea. With world war technology and know-how, it must have been possible to combine both of the media of the pre-war period - moving images without sound and constant noise without image - into the multimedia system of sound film. For this reason, the first thing that the Tri-Ergon people did was to establish technical specifications with systematic clarity:
We take the following principles as the basis of our work:
1. The same film that carries the image must also serve as a sound carrier.
2. The sound must be recorded and reproduced through photo-
graphic processes.
3. All of the equipment necessary for sound recording, amplifica-
tion, transmission, storage, reproduction and playback are not
permitted to deform the original sound print. (Vogt, 1964, p. 11)
The most difficult part of this project was naturally amplification. Sound signals are initially so weak that at best they can make a hog's bristle vibrate, like Scott's phonautograph. Accordingly, the Tri-Ergon people first had to develop a tube amplifier that reacted "with a repro- ducible steepness of approximately six milliamperes of anode current change per volt of grid voltage change" (Vogt, 1964, p. 16). It turned out that a very similar tube amplifier had already been developed at Siemens by the great Dr. Schottky, to whom today's transistor tech- nology owes all Schottky diodes. Patent rights thus no longer applied, but the Tri-Ergon people had still resolved their fundamental problem.
Only Tri-Ergon had now become a system project comparable perhaps only to Edison's electrification of theaters, streets, and resi- dential homes. It could no longer be managed through individual inventions, but rather it required an entire chain reaction of new developments. After the solution of the amplifier problem, there
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was still the task on both the transmItter and the receiver side of transforming an acoustic signal into an optical signal that would be compatible with the filmstrip. Vogt, Massolle, and Engl solved this problem in a way that already prefigures the merging of sound and television technologies: because electricity had become the medium of all possible media or sensory channels, the sound signal could first be converted into current through a newly developed, highly sensi- tive, and inertia-free microphone, whose noise had been minimized compared to the old carbon button microphone. This current, which was still amplified by the new tube, then regulated a glow-discharge lamp, whose oscillations were visible and thus filmable when they were in the high-frequency range of up to 100 kHz (Vogt, 1964, p. 20). Despite their name, therefore, soundtracks are not sounds at all, but rather they are varyingly bright and varyingly wide images of the vibrations that sounds or noises physically are, which makes them extremely close to the Braunian tube.
And because the receiver side of a media system - according to Shannon's information theory - implements the inverse mathemati- cal function of the transmitter side, the three Tri-Ergon developers constructed a selenium cell for their film projectors, which was also crucial for television. Selenium cells converted light into electricity again, which then in turn only had to be converted to the cinema sound system - and this was the historical reason why sound film engineers also included a few early television engineers, like Mihaly or Karolus. Vogt, Massolle, and Engl completed their technical speci- fications most elegantly: namely, they built the first electrostatic loud- speaker, which at that time conld fill the entire cinema with sound and which is still ideal for headphones and stereos today. With this static loudspeaker, Edison's entire mechanics of sound storage was replaced by an electronic control.
So far, so good. Tri-Ergon had done its work and integrated an entire chain of new developments into a single media system. On February 22, 1920, the sound of a harmonica and the noteworthy word "milliampere" could be heard in a playing film for the first time (Vogt, 1964, p. 37). One year later, shortly after midnight, this contemptible yet wonderful word from the mouth of a technician was replaced with a female speaker "in close-up" reciting the poem Heather Rose by Johann Wolfgang von Goethe (Vogt, 1964, p. 38). This would have pleased Miinsterberg, who claimed that film techni- cally liquidates all classical-romantic substitute sensuality, such as the virtual reality of that rose, which as you know represents a virgin shortly before her defloration.
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However, those sorts of successes did not yet make the new multimedia system a commercial success. As the Tri-Ergon people presented their technical Gesamtkunstwerk to the director of a large electrical company, which to my mind could only have been Siemens, their absolutely correct argument was that a systematically developed chain of tube amplifiers, microphones, and loudspeakers could support sound film as well as civilian wireless telephony - in today's words, therefore, entertainment radio. The director's counter- argument was that no listener "would spend good money for some- thing that comes into his house for free like air and light" - in other words, no one would make Siemens happy by paying radio license fees (Vogt, 1964, p. 47).
In September 1922, the silent film industries reacted accordingly to the first public demonstration of sound film. From the viewpoint of their financial area of competence the Berliner Borsenzeitung briefly wrote: "The extent to which talking films are really the future, however, remains to be seen. It should not be forgotten that the talking film loses its internationality, and it must always remain limited to smaller works, as large films are only profitable on the world market" (Vogt, 1964, p. 44).
When Hans Vogt told this counter-argument to his wife, she came up with an idea that led to the Tri-Ergon people's siugle lucrative patent: the Gisela patent. Gisela Vogt proposed, namely, "to over- come speech difficulties in the future by making consecutive record- ings of each sound film scene in the studio in multiple idioms, in the primary cultural languages" (Vogt, 1964, p. 44).
With this new principle of synchronization, which had been con- ceived by a woman, the multimedia system was perfect. By rights, it would have had to wipe ont the cinema equipment that had already been established, but the three amateurs were not able to also finance this mnlti-billion dollar replacement. It was clear that the conver- sion of silent film to sound film was only the first in an entire series of conversions that would turn the existing media system operating worldwide completely inside out without interrupting its efficiency or its finances. The same holds true for television systems or technical wars in general, both in the recent past and in the future.
In the case of sound film, it is easy to predict the outcome of this immense need for capital: as in the USA, the German film industry also fell into the hands of electrical concerns like Siemens and AEG, which got involved in lawsuits with the American patent holders for years until the worldwide marlcets were divided up, as usual, and UFA was taken over by Deutsche Bank and Hugenberg. And one
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fine day, after the inconsequential Tri-Ergon patents had long been sold in Switzerland, an American film giant conceived of the idea of commercially surpassing Warner Brothers and their vitaphone system. William Fox, who had first made money, as I said, with Edison's automatic kinetoscopes, bought the Tri-Ergon patents and converted them into a completely auto-referential form of film publicity: Fox's Movietone talking newsreels, the first sound documentary film.
However, all of the international networks between companies and banks, or between Zurich and Hollywood, could not alter the fact that sound film - in contrast to silent film - does not constitute an international medium. The Gisela patent is and remains a com- promise. As long as people continue to speak American or German, and have thus not yet defected to a worldwide standardized computer language like Algol, C or Ada, sound film will continue to serve as national propaganda in so-called national languages. This is rather inconsequential today, in the age of the computer, as the greatness of film is now a thing of the past and only computer languages still count. But because the English themselves refused at that time to recognize the dialect of Hollywood and California as English (Zglinicki, 1979, p. 612), sound film virtually appeared to form nations, just like the radio of that time. It thus restricted the com- panies of the interwar period to national language borders, which also committed them to the possibility of a second world war. Our film history must therefore turn to this war.
It should be emphasized beforehand that the difficulties of sound film synchronization also have an internal technical-aesthetic aspect. The numerous conversions between sound, image, and electricity that are necessary for this process already indicate that acoustic and optical signals are naturally less compatible. For precisely this reason, sound film was the first model case of a multimedia system long before television - if this term is understood as a system that manufactures not natural or physiological but rather technical con- nections. Sound film thus had to bridge two fundamental differences between optics and acoustics, which can briefly be explained.
First, acoustic signals only depend on a single independent vari- able: time (provided that stereophonic sound effects are disregarded, of course). Every musical signal is the momentary amplitude of a complex yet solitary vibration in time. As moving images, film, and television also depend on time. However, they also depend on two spatial coordinates: the height and width of each individual pixel (apart from 3-D experiments, the third spatial coordinate of depth
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can be ignored in the same way that stereophonic sound can be dis- regarded when making sound recordings). A one-dimensional vibra- tion or line is thus adequate for sound recording, whereas optical media principally require two-dimensional signal processing. When calculated by the technical-economic standards of engineers, this means that the amount of information to be processed is raised to tbe second power. For this reason, the image fills almost the entire celluloid of a sound film, whereas a band at the edge of the image is sufficient for the optical soundtrack, which in principle could even
be implemented as a simple line.
Second, the acoustics compensate for this simplicity by functioning,
since Edison's days, as an analog medium. In every given moment, the stored technical signal corresponds to the precise amplitude of the recorded sound signal. Until the introduction of audiotape, as I said before, this continuous image of continuous vibrations made it unimaginable and unfeasible to cut the soundtrack into pieces and then rearrange these clips arbitrarily, as is customary with film montage. According to the Breslau radio play pioneer Friedrich Bischoff, when the first radio play directors received the strange assignment to invent a new art form they in desperation chose the feature film as their specific model. Their quasi-cinematic radio play tricks even included slow dissolves and fades, which the new radio art borrowed from films. On the other hand, abrupt cuts and montages, which Andre Malraux called the operating principle of film, did not find their way into the emerging radio play.
By the same token, film and television are discrete processes that deal with nothing but individual frames or pixels, because optical storage is impossible even today. Even electronic switches work far too slowly to store or process light as the mixture of frequencies that it physically is. As is well known, audible sound ranges from approximately 25 Hz to 16 kHz, and that is why it was so easily conquered by low-frequency technology. Visible light is ten billion times faster and ranges from 700 to 380 terahertz. These are numbers with 14 zeroes, which is roughly 8 zeroes beyond the switching time of today's standard electronics, and therefore no medium could even come close. For this reason, film and television do not store light itself but rather only its photochemical effects (as we have already thoroughly discussed), which can then be stored and played back every twenty-fifth of a second, that is, in the low-frequency range. A compact disc that would sample sound events not at the usual 40,000 times per second but rather as slow as film or television would be a unique disaster for the ears.
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The problems of television and sound film can only be understood on the basis of these physical principles of media technology. The Tri-Ergon process had to be capable of transporting the film images jerkily as a discrete signal, while simultaneously reading the optical soundtrack continuously as an analog signal.
To soften this collision between digital and analog, the Tri-Ergon people developed a new film transport system. Before and after a frame was projected, the celluloid went into a waiting loop, which compensated for the static images during the projection time. Behind the second waiting loop, the film roll continued running the entire time without any interruption, which also made it possible to read the soundtrack as an undisturbed continuum.
The mechanical solution to this problem also had a systematic side. Through millisecond-precise coupling between image and sound, sound film had carried out Messter's standardization proposals for the first time, which means that it had also required an absolutely fixed recording and playback speed for film images. Otherwise, a film star with a soprano voice would have been able to sound like a bass and a film star with a bass voice like a eunuch. You all know
such sound manipulations from tape recorders that run too quickly or too slowly.
In the days of silent film, on the other hand, time loops and time lapses were not technical-experimental exceptions but rather daily practices in order to sell as many meters of celluloid as possible to a paying audience. For the first time, therefore, sound film opened up an absolute difference between experimental films and feature films. Real-time processing of tbe visuals first became genuinely verifiable through the ear and the acoustics. For this reason, sound film was a revolution in film aesthetics.
To begin with, many performing artists became unemployed in the middle of the global economic crisis. In 1929, a flyer with the following headlines in bold print was circulated in German moving picture theaters, as they were still so beautifully called (I have left out the fine print):
To the public!
Attention! Sound film is dangerous!
Sound film is kitsch!
Sound film is economic and spiritual murder!
Sound film is bad conservative theater at higher prices! Therefore:
Demand good silent films!
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Demand orchestral accompaniment with musicians! Demand stage exhibitions with artists!
Reject sound film! (quoted in Greve et aI. , 1976, p. 287)
This social-revolutionary pamphlet, written in the style of the Com- munist Party or the Nazi Party, was of course signed by the Inter- nationale Artisten-Loge, the performers union, and the Deutscher Musiker-Verhand, the musicians union. These unions were some- what Justified, as the epoch of easy and therefore pointless theater or literary adaptations had indeed begun, bnt they were unable to comprehend a technology that entirely dispenses with acceptance or rejection, needs or fears. Circus artists and musicians were therefore just about as intelligent as many theorists, from Miinsterberg to Bela Balazs, who praised silent film as a self-contained art form and harshly called the possibility of adding a soundtrack absurd. Only theorists, at least at that time, were less frequently unemployed.
The second point is reminiscent of a real historical joke that sound film played on a famous silent film star. John Gilbert had enchanted America's screens and women for 11 long years without having to betray the secret of his voice. However, in 1929 Gilbert's first sound film made what I have presented to you as a technical possibility literally or physiologically true: even without time-axis manipulation or sound time lapse, Gilbert's voice sounded like Mickey Mouse or a eunuch. Immediately after the premiere of this film, the star was a dead man in his own lifetime. Only Garbo threw a pair of roses into his grave (Zglinicki, 1979, p. 607).
The total securing of evidence through which people are registered by multimedia systems can also have a rebound effect on people themselves. Sound film changed the standard of voices and even more noticeably that of movements. As you all know, all of the expressionistic gestures employed by silent film actors for 30 years, which had barely made up for the lack of words and simulated the superimposed intertitles, disappeared; in facial expressions and ges- tures, sound film asserted a verifiable ordinariness. The crude time of small people - in other words, Hollywood cinema - could begin. For reasons that were less democratic than technical, it became practi- cally impossible to cut or interrupt people in the middle of speaking, unlike the old days of silent film when the actors were inaudible. Even today, we must patiently watch and listen in front of the screen until no one in the studio has anything more to say. Expressionistic gestures, which had been developed as the last defense against cuts, film doubles, and trick film shocks, thus gave way to a new movement
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style, as the inability to cut acoustic events also dictated the optical
events.
Funnily enough, one of the last German silent films, which had actually been made in the era of sound film, illustrated the difference between the two media within the plot as the difference between two generations. Using expressionistic silent film gestures, Fritz Lang's 1929 film Frau im Mond (Woman in the Moon) depicted an old, poverty-stricken professor who dreams only theoretically of moon rockets. In contrast, the young engineers, who turned this theory into blitzkrieg technology at practically the same time as the real Wernher von Braun, are depicted with the economical gestures of sound film, the new objectivity, and the Wehrmacht.
We can leave the content of sound films to themselves, because according to McLuhan's law the content of any medium is always only another medium. And thus, to adapt de Sade freely, we can bring the history of film with one final exertion to an end. With key words like rocket technology and Wehrmacht, a third subchapter has opened whose title, in a modification of a Foucault book, should be called: From the Birth of Media Technologies to the Color of the World War.
3. 2. 5 Color Film
In short, World War II was colorful. The reason was actually because the chief sponsor of the German film industry was Dr. Joseph Goebbels, the Minister for Popular Enlightenment and Propaganda, who had declared war on black-and-white film. In the name of total war or total simulation, World War II eliminated the last remaining differences between fiction and reality, and thus all the ways in which so-called artworks and so-called empiricism have been differentiated from time immemorial. After 1944, for example, German tank crews could no longer operate during the day due to allied air superiority, and they were equipped with night-vision devices that not only put Herschel's discovery of infrared light into practice, but also realized various dreams from a thousand and one nights. Conversely, Sir Watson-Watt provided the English air force with the first operational radar system in the world, which improved on Ritter's discovery of invisible ultraviolet light by extending it towards even higher light frequencies. If it was possible to see colors beyond even the visible color spectrum, such as infrared or radar waves, then visible colors were not permitted to remain hidden. The end of silent film as a consequence of World War I was thus followed by the development
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of color film as preparation for World War II. The Redness of Red in Technicolor, which was the lovely title of a 1960s book, was also the red over London, Dresden, and Hiroshima.
The first attempt to use homemade Agfacolor colors was the film Women Are Better Diplomats, which was banned by Goebbels at the beginning of the war simply because in his eyes the colors were "shameful. " The Wehrmacht, or more precisely the navy, had discov- ered feature films in American Technicolor on captured allied ships and sent them as spoils of war to the propaganda ministry. Among these films, naturally, was Gone with the Wind, the self-promotional color film about the American Civil War and the wonderfully color- ful fires that develop when one burns the wooden palaces of old- fashioned southern slave owners.
The German Agfacolor film followed this brilliant example and was gone with the wind. As usual, the leadership of the Reich con- tacted IG Farben, whose chemicals and poisonous substances were crucial to the war effort, and an optimized Agfacolor finally caught up with the criteria for realistic color set by Technicolor. This war over realistic color was supposed to define the entire history of optical media from 1939 to color television in 1965. But in 1942, Veit Harlan was already able to delight all of fortified Europe, from Cherbourg to Kiev, with his Golden City, a color film that was still primarily a form of publicity for itself. The propaganda minis- ter's strategy, whereby only perfectly made entertainment could raise morale, had once again been put into action.
So much for Virilio's discussion of color film as the spoils of war (Virilio, 1989, p. 8). Incidentally, this was not only true for Veit Harlan, but also for Eisenstein, whose Ivan the Terrible had to make do with captured German Agfacolor film. The transfer of technologi- cal advances in two phases (from America to Europe and then from Europe to West Asia), which has since become typical, thus took shape long before Gorbachev.
In addition to these historical notes, however, some technical- systematic remarks must also be devoted to color film, and I will once again attempt to formulate this so generally that it will also be true for color television. This is easy from a technical perspective, because the black-and-white television from World War II already had the technical elements of color television.
I cannot compete with Goethe and deliver a historical theory of colors. Still, the most important steps leading from color photo- graphy to color film to color television must be mentioned. It has already been said that painters always had to deal with colors, and
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signs of color deterioration over time became photography through positivization. But there was no economy of colors ill painting, as this did not become necessary until the development of color ink and color photography. In other words, the number of colors that a painter used to produce a mixed color on his palette was entirely up to his discretion. However, in 1611, an entire century before Newton's analysis of the light spectrum, the Venetian Antonius de Dominis established the key principle that all colors can be mixed from red, green, and violet - the three primary colors. This additive synthesis made it possible to print copperplate engravings no longer only next to one another - as was already the custom with Gutenberg and his colleague Schoffler - but also over one another. Bold colors (on broadsheets) were replaced by infinitely graduated and perfectly overlapping color values, which were standardized in the late nine- teenth century (after the discovery of chemical-artificial aniline dyes, the basis of IG Farben). With Senefelder's lithography, at the latest, three-color printing could commit all desired color nuances to paper. Four-color printing, which has since become the technical standard, also only uses three colors; the fourth printing plate is not colored, but is rather only black or grey, and its task is to differentiate bright- ness values (such as between pastel red and dark red of the same tint).
This economy of materials had important consequences for physi- ological optics, as it defined not arts but rather the first technical media. In the same years that Goethe spent dreaming of a poetic- aesthetic theory of colors, the Englishman Thomas Young developed first, his theory of the interference of light and second, his hypothesis that the eye also functions like a three-color print. Simply because it is completely improbable that the eye would have enough room to contain receptors for an infinite number of different colors, it was necessary to postulate the existence of sensors first for red, second for green, and third for violet. As far as I know, this has never been demonstrated on a living human eye, but in 1967 the Nobel Prize in Physiology went to three doctors who had proved that the cones of human-like vertebrates were limited to RGB (as the technicians say), while the rods can only distinguish between light and dark. Physiologically, therefore, every color signal is a mixture of different amounts of three tints plus a brightness or saturation value. Techno- logically, television - as electrified four-color printing - will derive from this its separation between chrominance (or color value) and luminance (or brightness value).
The first person to convert the new color physiology into technol- ogy again was none other than James Clark Maxwell, to whom we
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owe the general field theory of magnetism and electricity - the prin- ciple of all wireless radio communication - and the clarification that visible light does not consist of elastic vibrations, but rather it is only a special case of that electromagnetic spectrum. In 1861, Maxwell took black-and-white photographs of the same object, colored them in the three primary colors, and successfully projected the images over one another. This would later become the basic circuit of both color film and color television, and it had consequences for painters and technicians.
To begin correctly with the technicians: in 1868, the "ingenious [photographer] Ducos du Hauron" connected the physiology of Young (and Helmholtz) with the media technology of Maxwell (Bruch, 1967, p. 35). He literally suggested: "Small points and lines in the three primary colors red, green, and blue are placed next to each other on a plate so closely that they all merge into the same blended white at the same time. When the elements of all three colors are equally bright, they cover the same parts of the surface; when one color is less bright, more elements are taken from this color and they become larger" (Bruch, 1967, p. 35).
Ingenious blueprints rarely creep up so softly.
between perspective and ballistics became a technological reality by World War I at the latest. Messter's ingenious construction, which photographed at least 7. 2 million square kilometers of combat area using millions of kilometers of roll film' (Zglinicki, 1979, p. 273), could only be improved by combining shooting and filming, serial death and serial photography, into a single act. This was accom- plished by a French reconnaissance pilot who relocated the visual and ballistic axis of both the machine gun and the camera to the axis of the propeller (Virilio, 1989, p. 18).
9 Kittler misquotes Zglinicki when he says that "millions of kilometers" of film were used in World War I. Zglinicki's actual figure was only 950,000 km,
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This coupling also took place in Germany. Guido Seeber, who built the Babelsberg studios in 1911 and filmed The Student of Prague there in 1913, was drafted two years later in 1915 and sent to the experimental seaplane station in Warnemiinde (not to say Peen- emiinde). There, he established at the same time a central educational film and photography hire service. Their first successful scientific film showed with the help of X-ray photography that countless airplane crashes were caused by lead balls built into the wooden propellers for balance; at high speeds these balls fly out and smash through the airplanes like bullets.
In a positive inversion of this negative test result, so to speak, Seeber also constructed a machine gun sight for fighter planes, which was supposed to optimize the machine gun firing rate. And just like the French reconnaissance pilot, Seeber combined this machine gun sight with a small film camera, which also shot film frames whenever the machine gun fired.
Strategically, therefore, filming and flying coincide. McLuhan sums this up succinctly in Understanding Media: "It was the photograph that revealed the secret of bird-flight and enabled man to take off" (McLuhan, 1964, p. 174). There was a reason why Marey had also studied the movements of bird wings and why photographers like Nadar had taken pictures from hot-air ballooons and passionately fought against zeppelins, supporting instead bird-like - or "heavier than air," as it was called at that time - plane constructions. Gabriele D'Annunzio, the decadent novelist and fighter pilot, already dem- onstrated in 1909 to a woman sitting next to him on an airplane that by approaching from the air the cathedrals and castles of Italy could be magnified or reduced by any amount and thus also visu- ally destroyed. This discovery, just before the outbreak of the First World War, which D'Annunzio himself only turned into a novel, also unleashed the tracking shots of the first world-famous period film Cabiria, which D'Annunzio contributed to as adviser and allegedly also screenwriter. During the war, his flight squadron "La Serenis- sima" proceeded to fly from Venice across the Alps (which was quite dangerous at that time) to mount an attack on Vienna. These attacks did not consist of bombs, as D'Annunzio explained to the Viennese on propaganda flyers dropped on the city, but rather the Austrians were permitted to remain alive so that they would be able to over- throw their emperor more effectively.
Historians only later recognized that the Viennese-Venetian air war scenario had already been attempted half a century before D'Annunzio, only I I I reverse. You will recall that Field Marshal
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Lieutenant Baron von Uchatius started projecting stroboscope draw- ings in 1841, and somewhat later he also began manufacturing explo- sive Uchatius powder. In 1849, after a civil revolution that also promised freedom to the Italian and especially the Venetian subjects of Austria-Hungary, an Austrian General based in Mestre besieged the rebellious Venetian republic of Serenissima. To the general's chagrin, it appeared that Venice's lagoon prevented it from being captured or even fired on by the artillery. That is, until Uchatius and his brother, two artillery lieutenants from Vienna, then made the world-historical suggestion of attacking from the air: bombs "were to be carried over the city in hot-air-filled balloons made of paper, which would be made to rise if wind conditions were favorable. Prior to being released from the balloon, the 30 pound bomb was supposed to be set [with a time fuse] according to the strength of the wind at that moment. If everything went according to plan, therefore, the impact of the explosives had to take place ronghly where it was expected," becanse the "range" of the bombs "far exceeded the range of artillery at that time" (Knrzel-Runtscheiner, 1937, p. 48). The wind actually very rarely helped, bnt between June and July 1849 a few of the 110 Uchatins bombs manufactured in Vienna did indeed explode over the astonished Venetians. A field marshal lieutenant, who invented cinematic projection, thus also had to invent the projection or throw- ing of projectiles.
Once these bombs or later planes were manned, the cinematic high-angle shot was born. So World War I not only produced the new professions of reconnaissance and bomber pilots, bnt also a new kind of film director. These directors had all previously been fighter pilots, and on the basis of their technologically altered visual perception they also revolntionized the entertainment medium of film. Jean Renoir, the director of Grand Illusion, was a fighter pilot, just like Howard Hawks, who filmed his war memories in 1930 as Dawn Patrol. The clearest example of this nexus between air combat and cinema, however, was Dziga Vertov, the Soviet director, film theorist and above all Lenin's propaganda conductor. Vertov's so-called "rules" for experimental film, which cancelled out all bourgeois infatuation with images, began first with a "General instruction for all tech- niques: the invisible camera. " Eight individual points then followed. No. 1 was: "Filming unawares - an old military rule: gauging speed, attack. " No. 6: "Filming at a distance. " No. 7: "Filming in motion. " And finally No. 8: "Filming from above" (Vertov, 1984, pp. 162-3).
So much for Vertov's combat rules as general staff officer - and now, in a free adaptation of Ernst Junger, the aerial combat film as
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mner expenence of a Vertov demoted to become his own front-line soldier:
I am the camera's eye. I am the machine which shows you the world as I alone see it. Starting from today, I am forever free of human immobility. I am in perpetual movement. r. . . ] I approach and draw away from things - I crawl under them - I climb on them - Jam on the head of a galloping horse - I burst at full speed ioto a crowd - I run before running soldiers - I throw myself down on my back - I rise up with the aeropianes - I fall and 1 fly at one with the bodies falling or rising through the air. (Virilio, 1989, p. 20)
In other words, the experimental and entertainment films made with a camera that was no longer only mobile, like Griffith's, but also truly unleashed through tracking shots, simply converted the perceptual world of World War I into mass entertainment. The same thing also happened incidentally in the new media art form known as the radio play, which European civilian radio developed in 1924. And because the war dead returned as an acoustic barrage in postwar radio plays and optical air combat in postwar films, the large cinema palaces between Hollywood and Berlin were also constructed like giant mau- soleums. After the European monarchies fell and the old conspiracy between state and church propaganda disintegrated, these cinema palaces became churches of state propaganda that no longer praised a king by the grace of God, but rather (to adapt Lenin freely) war technology and electrification (Virilio, 1989, p. 28).
But it seems to be a law of media history (at least for Berliners) that new applications are secondary compared to new circuit technology. The lessons that film directors learned from World War I pale before the lessons learned by electrical engineers.
The lesson was that film could stop being silent. The technologies of World War I led to sound film, which leads us to the next chapter of these lectures.
3. 2. 4 Sound Film
The history of sound film has to begin with the assertion that silent film was never silent. Edison had already designed a link between the kinetoscope and the phonograph, which could have been built at a pinch despite problems with sound recording from a distance and synchronization. Many hobbyists and tinkerers followed Edison's lead and attempted to couple a half-mechanical, half-electrical optics
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with a purely mechanical acoustics prior to World War I, but without any appreciable results. There were also experiments that attempted to connect silent film and electromagnetic sound recording, namely Poulsen's telegraphone. Although these experiments did not yield any concrete snccesses, they were theoretically significant because they established the principle of magnetic audiotape, which was ready to go into production during World War II. With the audiotape and the cassette, sound recording acquired for the first time the same material format as film: as a roll that allowed variable time axis manipulation, unlike the phonograph and the gramophone. Not only are time rever- sals possible, as with Edison, but also stop tricks, cuts, and montages, as with Melies. The simple manipulable acoustics of audiotape led to rock music, as you know, which could then in tum be coupled with manipulable videotapes, and the video clip was born.
But for us, those are all still musical dreams of the future. In the non-experimental everyday lives of people prior to 1929, silent film was never silent simply because films were never presented without some form of accompaniment. The cheapest form was the film explainer, who was often recruited (as we can gather from contem- porary adverts) from among the academic proletariat, and who would explain the plot of the film to the spectators while it was playing. Cinemagoers, who had always already been listeners and readers, needed training in the new semiotics of film, which essentially con- sisted of cuts and montages and thus empty spaces. Kurt Pinthus' Das Kinobuch (The Cinema Book), which was published by the expression- ist in 1913 and is full of screenplay proposals by his novelist friends, shows what an intellectual step it was to demand films suitable to the medium - film plots, in other words, that were intelligible based on image sequences alone without any intertitles or film explainers. But this I'art pour I'art of silent film had not been commercially successful. More expensive forms of sound accompaniment saw to that: music either from records or living musicians, who often also had the honor of generating theatrical sound effects fitted to the scene in addition to sounds on the piano. As a synthesis of two contradictory elements, Greek atmosphere and media-technical noise, Richard Wagner in particular triumphed in the cinema. Wagner not only invented the darkening of the auditorium, but also a kind of music that was itself noise. Printed piano score excerpts from Wagner's works, such as
Liebestod and The Ride of the Valkyries, accompanied films long before Apocalypse Now, where The Ride of the Valkyries was no longer shown as a lanterna magica effect, as it was in Wagner's opera in 1876, but rather as a helicopter attack in the Vietnam War.
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This brings us back to war and its innovations. In a word: World War I transformed Edison's simple light bulb into the electron tube, which made the live musical accompaniment of silent films obsolete. I am interested in the historical development of this technical wonder because the tube allowed for the possibility of synchronized film soundtracks and television up to the present day. It was not replaced until the development of contemporary LCD displays and other semi- conductor technologies.
The electron tube, as I said, emerged from Edison's simple light bulb, which allows me to bring the history of lighting to a close. Edison had methodically searched for a cheap and safe light - so methodically that he brought every conceivable type of tropical wood to his laboratory asa possible filament for his bulb. The acciden- tal combination, on which Daguerre had still subsisted, was thus systematically eradicated. Edison would have been able to electrify America after a couple years of research if a considerably more pow- erful competitor named Westinghouse had not replaced his direct current system with an alternating current system. On the other hand, Edison's discovery that light bulbs also work as electron tubes, as they emit ions under electrical voltage, was made entirely in passing. He was also unable to do anything more than have this so-called "Edison effect" named after him simply because he knew nothing about theoretical physics.
For this reason, a physics professor at the new and very modern Reichsuniversitiit in Strasbourg named Ferdinand Braun was the first to discover a possible application of the Edison effect in 1897. He deflected the electron beam inside the tube with electromagnets, which were in turn attached to the general alternating voltage of the Strasbourg power grid, and sent it to a phosphorescent screen. The controlled beam - the last and most precise variant of the actively armed eye - then inscribed the visible graphic sine wave of an alter- nating power supply on the screen. Braun had invented the oscil- loscope. When his assistants later suggested to him that the electron beam should project beautiful images rather than mathematical func- tions, Braun rejected this first notion of television receiver tubes. He was "personally surprised" that Westinghouse's alternating power grid had not generated any ugly jagged peaks or rectangles, but rather an "ideal sine wave" (Kurylo, 1965, p. 137). Oscillograph means "vibration writer," and it is therefore the electronically per- fected variant of all the movement writers, from Scott to Marey, that led to the writing of sounds and images. You will notice that the television played back equations rather than film characters when
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it first began with Ferdinand Braun. It will possIbly do so again at the end.
Braun's tube was not crucial for film and radio tecbnology, however, but rather another tube variant: the so-called triode. Lee de Forest in Palo Alto and Robert von Lieben in Vienna simultaneously conceived the idea of building tubes out of two electrical circuits, one controlling and the other controlled. Two mputs were needed along with a general ground return, and it was therefore called a triode or three-way in the artificial Greek of technology. According to Pynchon's brilliant commentary, this separation of control circuit and output circuit in 1906 solved a fundamental problem of the twentieth century: that of control. Triodes were actually more bulky, they were more sensitive to heat, and they required more voltage than the transistors that have replaced them since 1947, but they were also unbeatably economical. In other words, a variably small control current, which assumed the function of Braun's electromagnets, could switch variably large output currents on or off, thus amplifying or weakening it. Thus, the electron tube first decoupled the concept of power from that of physical effort. But because power does not simply have negative effects, according to Foucault's thesis, the tube is also economically still insufficiently described. Immediately before the outbreak of World War I, de Forest discovered for the allies and Alexander Meillner for the central powers that tubes not only amplify but also provide a new type of power called feedback. When the output current of a triode is steered in the opposite direction of the control grid - when a voltage decrease in the first circuit thus corre- sponds to a voltage increase in the second circuit - negative feedback can be generated by leading the output signal, which for physical reasons is always delayed for fractions of a microsecond, back to the control circuit. The entire feedback system begins to oscillate between the minimum and maximum voltage without breaking up the oscilla- tion. In other words, it becomes a high-frequency transmitter, which must then only be coupled with a low-frequency amplifying tube
in order to send radio or television signals. In the first step, after they are converted to electricity, the acoustic or optical data signals are variably increased through low-frequency amplification. In the second step, the data signals become transmissible without wires over variable distances by modulating them on a high carrier frequency.
As the basic circuit of microphones and radio transmitters, this was already clear in 1913. But World War I provided new applications for the technology and the means for its mass production. Trenches brought an end to the possibility of commanding soldiers from a
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distance through optical or acoustic signals, yet this was precisely why a need for electronic feedback between invisible fronts and equally invisible control centers emerged. The first radio transmitters only served to entertain radio operators with music in exceptional cases, and eventually this was officially forbidden as a "misuse of army equipment. " But to a greater degree they were used to manu- facture feedback loops between ground personnel and reconnaissance flyers, who were told over the radio which enemy objects were invis- ible from the ground and still needed to be photographed or filmed.
This high-frequency military technology led to the worldwide explosion of electronics companies. Five years later, and again through the misuse of army equipment, the national radio institu- tions of Europe and the commercial stations of the USA emerged, and this was followed a decade later by the first television transmitter.
But low-frequency military technology also had consequences for entertainment electronics. The triumph of amplifier tubes allowed electronics companies to revolutionize Edison's and Berliner's old- fashioned mechanical sound recording technology. AT&T in the USA and Siemens & Halske in Germany wired a record player with a pick-up and electrically controlled speakers. This also resolved the problem that Edison's sound recording system failed to remedy in the Black Mary studio. The trumpet of the phonograph worked only when it was held directly in front of the actors' mouths, and it could thus embarrassingly be seen in the film that was being made at the same time. Tube amplifiers first made media acoustics into a sixth sense that could match up to the sixth sense called the camera.
Sound film was developed simultaneously in Germany and in the USA immediately after World War I, but it is completely senseless, at least on the American side, to list the individual inventors by name. It is enongh to know that Warner Brothers was in serious financial trouble compared to the competition, and for this reason they reached for the life saver of sound film. The leading American electronics laboratory, AT&T's Bell Labs, gave the technically clue- less Sam Warner a hand. After the record had been electrified, AT&T was also able to offer Warner Brothers a special model: a huge record that could be synchronized with the silent film and broadcast in the cinema hall using an amplifier and loudspeaker. This vitaphone system was and remained a patent of Western Electric.
For this reason, it was useless to interpret or explain films any more. Becanse the content of a medinm is always another medium, sonnd films simply enhanced the reputation of the electronics compa- nies that had made them possible. The first sound film in 1929 was
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not called The Jazz Singer by chance. A Jewish ex-chOIrboy, who had sung with religious wise men in synagogues in New York as a child, defects to the American media after puberty and becomes a jazz singer (at least that is what white people called it in 1929). It breaks the heart of his pious father, who had not yet been disabused of his Mosaic faith by the melting pot of New York. The jazz singer is in the middle of a concert when he receives the news that his father is dying - let us say of heart failure - and he strikes up an old Jewish song that brings the entire audience to tears. Let us rather say: the recently electrified record companies, which are on the hunt behind the backs of all concert-goers, have a new hit in record sales. The Jazz Singer implies, therefore, that with the introduction of sound film Hollywood became a branch of electrical companies like Western Electric or General Electric, which possessed both record companies and radio stations at the same time and which, in turn, were only branches of large banks like Rockefeller or Morgan (Faulstich, 1979, p. 160).
In Germany, the development of sound film proceeded more sys- tematically and on a much smaller scale. After losing the war, there was hardly any money, and instead demobilized army radio equip- ment stood around everywhere in 1919. In only four years, the signal corps had increased from 3,000 to almost 300,000 men. But even with misused army equipment, it was still possible to develop the very first sound film system without the use of records.
The developers of this wondrous work called it Tri-Ergon, which seems reminiscent of the triode tube but was actually intended to combine the names of the three developers - Hans Vogt, Joseph Masolle, and Dr. Joseph Engl - into a single anonymous "work of three. " Luckily Vogt, the main player, left his memories to the German Museum in Munich. His "first contact with silent film" took place in 1905, when he was a 1S-year-old peasant boy and he saw documentary films from the ongoing Russo-Japanese war in the cin- ematograph. "Eight years later," when he was already serving in the imperial navy at the experimental radiotelegraphy station in Kiel, the German auteur film had replaced the documentary cinematograph. Vogt enjoyed the "beautiful, highly dramatic" film The Student of Prague, as Evers and Seeber had just filmed it. However, there were two things that disturbed the young radio technician, who had been entrusted with the latest AEG tubes: "in close-ups, the lips of the actors moved like ghosts," and "the comments of the explainer ruined the atmosphere" (Vogt, 1964, p. 7). As is usual with autobiog- raphies, Vogt claims that he would have immediately invented a new
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media system If only World War I had not broken out. Four years later, partly at the front and partly at the high-frequency laboratory of a certam Dr. Seibt in Berlin, Vogt took part in the ether war:
Soon I was active on the water, air, and earth fronts, soon again in the Berlin laboratory. A medium for communicating with buried trenches had to be created and tested. Radio direction finders and radio stations for the weather contingent zeppelins. The sad end of the war came. (Vogt, 1964, p. 7)
Vogt overcame this sadness while unemployed in postwar Berlin by once again returning to his film idea. With world war technology and know-how, it must have been possible to combine both of the media of the pre-war period - moving images without sound and constant noise without image - into the multimedia system of sound film. For this reason, the first thing that the Tri-Ergon people did was to establish technical specifications with systematic clarity:
We take the following principles as the basis of our work:
1. The same film that carries the image must also serve as a sound carrier.
2. The sound must be recorded and reproduced through photo-
graphic processes.
3. All of the equipment necessary for sound recording, amplifica-
tion, transmission, storage, reproduction and playback are not
permitted to deform the original sound print. (Vogt, 1964, p. 11)
The most difficult part of this project was naturally amplification. Sound signals are initially so weak that at best they can make a hog's bristle vibrate, like Scott's phonautograph. Accordingly, the Tri-Ergon people first had to develop a tube amplifier that reacted "with a repro- ducible steepness of approximately six milliamperes of anode current change per volt of grid voltage change" (Vogt, 1964, p. 16). It turned out that a very similar tube amplifier had already been developed at Siemens by the great Dr. Schottky, to whom today's transistor tech- nology owes all Schottky diodes. Patent rights thus no longer applied, but the Tri-Ergon people had still resolved their fundamental problem.
Only Tri-Ergon had now become a system project comparable perhaps only to Edison's electrification of theaters, streets, and resi- dential homes. It could no longer be managed through individual inventions, but rather it required an entire chain reaction of new developments. After the solution of the amplifier problem, there
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was still the task on both the transmItter and the receiver side of transforming an acoustic signal into an optical signal that would be compatible with the filmstrip. Vogt, Massolle, and Engl solved this problem in a way that already prefigures the merging of sound and television technologies: because electricity had become the medium of all possible media or sensory channels, the sound signal could first be converted into current through a newly developed, highly sensi- tive, and inertia-free microphone, whose noise had been minimized compared to the old carbon button microphone. This current, which was still amplified by the new tube, then regulated a glow-discharge lamp, whose oscillations were visible and thus filmable when they were in the high-frequency range of up to 100 kHz (Vogt, 1964, p. 20). Despite their name, therefore, soundtracks are not sounds at all, but rather they are varyingly bright and varyingly wide images of the vibrations that sounds or noises physically are, which makes them extremely close to the Braunian tube.
And because the receiver side of a media system - according to Shannon's information theory - implements the inverse mathemati- cal function of the transmitter side, the three Tri-Ergon developers constructed a selenium cell for their film projectors, which was also crucial for television. Selenium cells converted light into electricity again, which then in turn only had to be converted to the cinema sound system - and this was the historical reason why sound film engineers also included a few early television engineers, like Mihaly or Karolus. Vogt, Massolle, and Engl completed their technical speci- fications most elegantly: namely, they built the first electrostatic loud- speaker, which at that time conld fill the entire cinema with sound and which is still ideal for headphones and stereos today. With this static loudspeaker, Edison's entire mechanics of sound storage was replaced by an electronic control.
So far, so good. Tri-Ergon had done its work and integrated an entire chain of new developments into a single media system. On February 22, 1920, the sound of a harmonica and the noteworthy word "milliampere" could be heard in a playing film for the first time (Vogt, 1964, p. 37). One year later, shortly after midnight, this contemptible yet wonderful word from the mouth of a technician was replaced with a female speaker "in close-up" reciting the poem Heather Rose by Johann Wolfgang von Goethe (Vogt, 1964, p. 38). This would have pleased Miinsterberg, who claimed that film techni- cally liquidates all classical-romantic substitute sensuality, such as the virtual reality of that rose, which as you know represents a virgin shortly before her defloration.
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However, those sorts of successes did not yet make the new multimedia system a commercial success. As the Tri-Ergon people presented their technical Gesamtkunstwerk to the director of a large electrical company, which to my mind could only have been Siemens, their absolutely correct argument was that a systematically developed chain of tube amplifiers, microphones, and loudspeakers could support sound film as well as civilian wireless telephony - in today's words, therefore, entertainment radio. The director's counter- argument was that no listener "would spend good money for some- thing that comes into his house for free like air and light" - in other words, no one would make Siemens happy by paying radio license fees (Vogt, 1964, p. 47).
In September 1922, the silent film industries reacted accordingly to the first public demonstration of sound film. From the viewpoint of their financial area of competence the Berliner Borsenzeitung briefly wrote: "The extent to which talking films are really the future, however, remains to be seen. It should not be forgotten that the talking film loses its internationality, and it must always remain limited to smaller works, as large films are only profitable on the world market" (Vogt, 1964, p. 44).
When Hans Vogt told this counter-argument to his wife, she came up with an idea that led to the Tri-Ergon people's siugle lucrative patent: the Gisela patent. Gisela Vogt proposed, namely, "to over- come speech difficulties in the future by making consecutive record- ings of each sound film scene in the studio in multiple idioms, in the primary cultural languages" (Vogt, 1964, p. 44).
With this new principle of synchronization, which had been con- ceived by a woman, the multimedia system was perfect. By rights, it would have had to wipe ont the cinema equipment that had already been established, but the three amateurs were not able to also finance this mnlti-billion dollar replacement. It was clear that the conver- sion of silent film to sound film was only the first in an entire series of conversions that would turn the existing media system operating worldwide completely inside out without interrupting its efficiency or its finances. The same holds true for television systems or technical wars in general, both in the recent past and in the future.
In the case of sound film, it is easy to predict the outcome of this immense need for capital: as in the USA, the German film industry also fell into the hands of electrical concerns like Siemens and AEG, which got involved in lawsuits with the American patent holders for years until the worldwide marlcets were divided up, as usual, and UFA was taken over by Deutsche Bank and Hugenberg. And one
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fine day, after the inconsequential Tri-Ergon patents had long been sold in Switzerland, an American film giant conceived of the idea of commercially surpassing Warner Brothers and their vitaphone system. William Fox, who had first made money, as I said, with Edison's automatic kinetoscopes, bought the Tri-Ergon patents and converted them into a completely auto-referential form of film publicity: Fox's Movietone talking newsreels, the first sound documentary film.
However, all of the international networks between companies and banks, or between Zurich and Hollywood, could not alter the fact that sound film - in contrast to silent film - does not constitute an international medium. The Gisela patent is and remains a com- promise. As long as people continue to speak American or German, and have thus not yet defected to a worldwide standardized computer language like Algol, C or Ada, sound film will continue to serve as national propaganda in so-called national languages. This is rather inconsequential today, in the age of the computer, as the greatness of film is now a thing of the past and only computer languages still count. But because the English themselves refused at that time to recognize the dialect of Hollywood and California as English (Zglinicki, 1979, p. 612), sound film virtually appeared to form nations, just like the radio of that time. It thus restricted the com- panies of the interwar period to national language borders, which also committed them to the possibility of a second world war. Our film history must therefore turn to this war.
It should be emphasized beforehand that the difficulties of sound film synchronization also have an internal technical-aesthetic aspect. The numerous conversions between sound, image, and electricity that are necessary for this process already indicate that acoustic and optical signals are naturally less compatible. For precisely this reason, sound film was the first model case of a multimedia system long before television - if this term is understood as a system that manufactures not natural or physiological but rather technical con- nections. Sound film thus had to bridge two fundamental differences between optics and acoustics, which can briefly be explained.
First, acoustic signals only depend on a single independent vari- able: time (provided that stereophonic sound effects are disregarded, of course). Every musical signal is the momentary amplitude of a complex yet solitary vibration in time. As moving images, film, and television also depend on time. However, they also depend on two spatial coordinates: the height and width of each individual pixel (apart from 3-D experiments, the third spatial coordinate of depth
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can be ignored in the same way that stereophonic sound can be dis- regarded when making sound recordings). A one-dimensional vibra- tion or line is thus adequate for sound recording, whereas optical media principally require two-dimensional signal processing. When calculated by the technical-economic standards of engineers, this means that the amount of information to be processed is raised to tbe second power. For this reason, the image fills almost the entire celluloid of a sound film, whereas a band at the edge of the image is sufficient for the optical soundtrack, which in principle could even
be implemented as a simple line.
Second, the acoustics compensate for this simplicity by functioning,
since Edison's days, as an analog medium. In every given moment, the stored technical signal corresponds to the precise amplitude of the recorded sound signal. Until the introduction of audiotape, as I said before, this continuous image of continuous vibrations made it unimaginable and unfeasible to cut the soundtrack into pieces and then rearrange these clips arbitrarily, as is customary with film montage. According to the Breslau radio play pioneer Friedrich Bischoff, when the first radio play directors received the strange assignment to invent a new art form they in desperation chose the feature film as their specific model. Their quasi-cinematic radio play tricks even included slow dissolves and fades, which the new radio art borrowed from films. On the other hand, abrupt cuts and montages, which Andre Malraux called the operating principle of film, did not find their way into the emerging radio play.
By the same token, film and television are discrete processes that deal with nothing but individual frames or pixels, because optical storage is impossible even today. Even electronic switches work far too slowly to store or process light as the mixture of frequencies that it physically is. As is well known, audible sound ranges from approximately 25 Hz to 16 kHz, and that is why it was so easily conquered by low-frequency technology. Visible light is ten billion times faster and ranges from 700 to 380 terahertz. These are numbers with 14 zeroes, which is roughly 8 zeroes beyond the switching time of today's standard electronics, and therefore no medium could even come close. For this reason, film and television do not store light itself but rather only its photochemical effects (as we have already thoroughly discussed), which can then be stored and played back every twenty-fifth of a second, that is, in the low-frequency range. A compact disc that would sample sound events not at the usual 40,000 times per second but rather as slow as film or television would be a unique disaster for the ears.
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The problems of television and sound film can only be understood on the basis of these physical principles of media technology. The Tri-Ergon process had to be capable of transporting the film images jerkily as a discrete signal, while simultaneously reading the optical soundtrack continuously as an analog signal.
To soften this collision between digital and analog, the Tri-Ergon people developed a new film transport system. Before and after a frame was projected, the celluloid went into a waiting loop, which compensated for the static images during the projection time. Behind the second waiting loop, the film roll continued running the entire time without any interruption, which also made it possible to read the soundtrack as an undisturbed continuum.
The mechanical solution to this problem also had a systematic side. Through millisecond-precise coupling between image and sound, sound film had carried out Messter's standardization proposals for the first time, which means that it had also required an absolutely fixed recording and playback speed for film images. Otherwise, a film star with a soprano voice would have been able to sound like a bass and a film star with a bass voice like a eunuch. You all know
such sound manipulations from tape recorders that run too quickly or too slowly.
In the days of silent film, on the other hand, time loops and time lapses were not technical-experimental exceptions but rather daily practices in order to sell as many meters of celluloid as possible to a paying audience. For the first time, therefore, sound film opened up an absolute difference between experimental films and feature films. Real-time processing of tbe visuals first became genuinely verifiable through the ear and the acoustics. For this reason, sound film was a revolution in film aesthetics.
To begin with, many performing artists became unemployed in the middle of the global economic crisis. In 1929, a flyer with the following headlines in bold print was circulated in German moving picture theaters, as they were still so beautifully called (I have left out the fine print):
To the public!
Attention! Sound film is dangerous!
Sound film is kitsch!
Sound film is economic and spiritual murder!
Sound film is bad conservative theater at higher prices! Therefore:
Demand good silent films!
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Demand orchestral accompaniment with musicians! Demand stage exhibitions with artists!
Reject sound film! (quoted in Greve et aI. , 1976, p. 287)
This social-revolutionary pamphlet, written in the style of the Com- munist Party or the Nazi Party, was of course signed by the Inter- nationale Artisten-Loge, the performers union, and the Deutscher Musiker-Verhand, the musicians union. These unions were some- what Justified, as the epoch of easy and therefore pointless theater or literary adaptations had indeed begun, bnt they were unable to comprehend a technology that entirely dispenses with acceptance or rejection, needs or fears. Circus artists and musicians were therefore just about as intelligent as many theorists, from Miinsterberg to Bela Balazs, who praised silent film as a self-contained art form and harshly called the possibility of adding a soundtrack absurd. Only theorists, at least at that time, were less frequently unemployed.
The second point is reminiscent of a real historical joke that sound film played on a famous silent film star. John Gilbert had enchanted America's screens and women for 11 long years without having to betray the secret of his voice. However, in 1929 Gilbert's first sound film made what I have presented to you as a technical possibility literally or physiologically true: even without time-axis manipulation or sound time lapse, Gilbert's voice sounded like Mickey Mouse or a eunuch. Immediately after the premiere of this film, the star was a dead man in his own lifetime. Only Garbo threw a pair of roses into his grave (Zglinicki, 1979, p. 607).
The total securing of evidence through which people are registered by multimedia systems can also have a rebound effect on people themselves. Sound film changed the standard of voices and even more noticeably that of movements. As you all know, all of the expressionistic gestures employed by silent film actors for 30 years, which had barely made up for the lack of words and simulated the superimposed intertitles, disappeared; in facial expressions and ges- tures, sound film asserted a verifiable ordinariness. The crude time of small people - in other words, Hollywood cinema - could begin. For reasons that were less democratic than technical, it became practi- cally impossible to cut or interrupt people in the middle of speaking, unlike the old days of silent film when the actors were inaudible. Even today, we must patiently watch and listen in front of the screen until no one in the studio has anything more to say. Expressionistic gestures, which had been developed as the last defense against cuts, film doubles, and trick film shocks, thus gave way to a new movement
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style, as the inability to cut acoustic events also dictated the optical
events.
Funnily enough, one of the last German silent films, which had actually been made in the era of sound film, illustrated the difference between the two media within the plot as the difference between two generations. Using expressionistic silent film gestures, Fritz Lang's 1929 film Frau im Mond (Woman in the Moon) depicted an old, poverty-stricken professor who dreams only theoretically of moon rockets. In contrast, the young engineers, who turned this theory into blitzkrieg technology at practically the same time as the real Wernher von Braun, are depicted with the economical gestures of sound film, the new objectivity, and the Wehrmacht.
We can leave the content of sound films to themselves, because according to McLuhan's law the content of any medium is always only another medium. And thus, to adapt de Sade freely, we can bring the history of film with one final exertion to an end. With key words like rocket technology and Wehrmacht, a third subchapter has opened whose title, in a modification of a Foucault book, should be called: From the Birth of Media Technologies to the Color of the World War.
3. 2. 5 Color Film
In short, World War II was colorful. The reason was actually because the chief sponsor of the German film industry was Dr. Joseph Goebbels, the Minister for Popular Enlightenment and Propaganda, who had declared war on black-and-white film. In the name of total war or total simulation, World War II eliminated the last remaining differences between fiction and reality, and thus all the ways in which so-called artworks and so-called empiricism have been differentiated from time immemorial. After 1944, for example, German tank crews could no longer operate during the day due to allied air superiority, and they were equipped with night-vision devices that not only put Herschel's discovery of infrared light into practice, but also realized various dreams from a thousand and one nights. Conversely, Sir Watson-Watt provided the English air force with the first operational radar system in the world, which improved on Ritter's discovery of invisible ultraviolet light by extending it towards even higher light frequencies. If it was possible to see colors beyond even the visible color spectrum, such as infrared or radar waves, then visible colors were not permitted to remain hidden. The end of silent film as a consequence of World War I was thus followed by the development
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of color film as preparation for World War II. The Redness of Red in Technicolor, which was the lovely title of a 1960s book, was also the red over London, Dresden, and Hiroshima.
The first attempt to use homemade Agfacolor colors was the film Women Are Better Diplomats, which was banned by Goebbels at the beginning of the war simply because in his eyes the colors were "shameful. " The Wehrmacht, or more precisely the navy, had discov- ered feature films in American Technicolor on captured allied ships and sent them as spoils of war to the propaganda ministry. Among these films, naturally, was Gone with the Wind, the self-promotional color film about the American Civil War and the wonderfully color- ful fires that develop when one burns the wooden palaces of old- fashioned southern slave owners.
The German Agfacolor film followed this brilliant example and was gone with the wind. As usual, the leadership of the Reich con- tacted IG Farben, whose chemicals and poisonous substances were crucial to the war effort, and an optimized Agfacolor finally caught up with the criteria for realistic color set by Technicolor. This war over realistic color was supposed to define the entire history of optical media from 1939 to color television in 1965. But in 1942, Veit Harlan was already able to delight all of fortified Europe, from Cherbourg to Kiev, with his Golden City, a color film that was still primarily a form of publicity for itself. The propaganda minis- ter's strategy, whereby only perfectly made entertainment could raise morale, had once again been put into action.
So much for Virilio's discussion of color film as the spoils of war (Virilio, 1989, p. 8). Incidentally, this was not only true for Veit Harlan, but also for Eisenstein, whose Ivan the Terrible had to make do with captured German Agfacolor film. The transfer of technologi- cal advances in two phases (from America to Europe and then from Europe to West Asia), which has since become typical, thus took shape long before Gorbachev.
In addition to these historical notes, however, some technical- systematic remarks must also be devoted to color film, and I will once again attempt to formulate this so generally that it will also be true for color television. This is easy from a technical perspective, because the black-and-white television from World War II already had the technical elements of color television.
I cannot compete with Goethe and deliver a historical theory of colors. Still, the most important steps leading from color photo- graphy to color film to color television must be mentioned. It has already been said that painters always had to deal with colors, and
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signs of color deterioration over time became photography through positivization. But there was no economy of colors ill painting, as this did not become necessary until the development of color ink and color photography. In other words, the number of colors that a painter used to produce a mixed color on his palette was entirely up to his discretion. However, in 1611, an entire century before Newton's analysis of the light spectrum, the Venetian Antonius de Dominis established the key principle that all colors can be mixed from red, green, and violet - the three primary colors. This additive synthesis made it possible to print copperplate engravings no longer only next to one another - as was already the custom with Gutenberg and his colleague Schoffler - but also over one another. Bold colors (on broadsheets) were replaced by infinitely graduated and perfectly overlapping color values, which were standardized in the late nine- teenth century (after the discovery of chemical-artificial aniline dyes, the basis of IG Farben). With Senefelder's lithography, at the latest, three-color printing could commit all desired color nuances to paper. Four-color printing, which has since become the technical standard, also only uses three colors; the fourth printing plate is not colored, but is rather only black or grey, and its task is to differentiate bright- ness values (such as between pastel red and dark red of the same tint).
This economy of materials had important consequences for physi- ological optics, as it defined not arts but rather the first technical media. In the same years that Goethe spent dreaming of a poetic- aesthetic theory of colors, the Englishman Thomas Young developed first, his theory of the interference of light and second, his hypothesis that the eye also functions like a three-color print. Simply because it is completely improbable that the eye would have enough room to contain receptors for an infinite number of different colors, it was necessary to postulate the existence of sensors first for red, second for green, and third for violet. As far as I know, this has never been demonstrated on a living human eye, but in 1967 the Nobel Prize in Physiology went to three doctors who had proved that the cones of human-like vertebrates were limited to RGB (as the technicians say), while the rods can only distinguish between light and dark. Physiologically, therefore, every color signal is a mixture of different amounts of three tints plus a brightness or saturation value. Techno- logically, television - as electrified four-color printing - will derive from this its separation between chrominance (or color value) and luminance (or brightness value).
The first person to convert the new color physiology into technol- ogy again was none other than James Clark Maxwell, to whom we
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owe the general field theory of magnetism and electricity - the prin- ciple of all wireless radio communication - and the clarification that visible light does not consist of elastic vibrations, but rather it is only a special case of that electromagnetic spectrum. In 1861, Maxwell took black-and-white photographs of the same object, colored them in the three primary colors, and successfully projected the images over one another. This would later become the basic circuit of both color film and color television, and it had consequences for painters and technicians.
To begin correctly with the technicians: in 1868, the "ingenious [photographer] Ducos du Hauron" connected the physiology of Young (and Helmholtz) with the media technology of Maxwell (Bruch, 1967, p. 35). He literally suggested: "Small points and lines in the three primary colors red, green, and blue are placed next to each other on a plate so closely that they all merge into the same blended white at the same time. When the elements of all three colors are equally bright, they cover the same parts of the surface; when one color is less bright, more elements are taken from this color and they become larger" (Bruch, 1967, p. 35).
Ingenious blueprints rarely creep up so softly.
