Tuesday, April 9, l935 hdhtibllt idlilbg blldh lb lhlddl' Width Plfilllhbb Three-Dimensional idea Thought About as Early as l853 ‘ PRODUCERS DOUBTFUL Recently in Paris, Louis Lumiere, who was the first to exhibit motion pictures in France, announced that he had solved the problem of {mm ducing motion pictures in stereoscop' ic relief, so that life appears on the screen apparently in three dimen- sions. Use Stereoscopic Methods This problem of relief was solved3 many years ago by means of the stereoscopic method in which photo- graphs are made in pairs at the same time and at the same -focus but not at the same point of View. The two lenses and the two plates or films take pictures separated by the dis- tance between the eyes—a matter of about three inches. Present the twin photos to twin eyes by means of the stereoscopes’ twin lenses, and the brain performs a miracle of fusion, resulting in a single picture in re- lief. Difficult in Application Applying this principle to motion pictures is not easy. The camera presents no difficulties. Either two shutters may be provided with two rolls of film traveling synchronous- ly, or right and left-eye pictures may be taken on a single film by a mir- ror or reflecting prism.‘ Projecting and viewing, however, present a real problem, for the usual equipment is expensive and cumbersome. Long before there were movies— in 1853—~the anaglyph was devised. Photographs to be seen by the right eye were tinted red and those in- tended for the left, green. Through spectacles which had one red and one green glass, one saw a single pic- ture in true relief. Any two com- plementary colors could be used. Rely on Mixture of Colors It is this principle that Louis Lumiere has revived and improved upon. Struck by the fact that the old motion-picture anaglyphs taxed the two eyes unequally (the two images were not of equal bri‘ghta ness) and that visual strain result ed, he decided that there must be more brilliancy and that this must be the same for both images. The brightest rays are the yellow- ish-green in the middle of the spec- trum. At opposite ends lies the dull- red and violet rays. Lumiere divided the spectrum in two straight lines through the portion of maximum in- tensity. Left-eye pictures are made by all the rays that lie to the left of the dividing line and right-eye pictures by the rays lying to the right. In this manner, the luminous density is equally distributed between the two eyes. Each eye does not see single color, but a mixture of colors lying on either side of the center of the spectrum. From here the prob- lem becomes one for the dye chemist. Audience Must Use Spectacles To separate the two sets of col- ored pictures, suitably tinted, gela- tine covered spectacle are worn. The left eye looks through gelatine dyed with a mixture of napthol green, eosin (red), and tartrazin. The right eye looks lthrough a doulble coating, one stained with cyanol blue and the other with a saccharine so- lution of diethylmetamidophenol. The rays passing through to the left eye are those in the yellowishagreen- ‘ orange portion of the spectrum; those seen by the right eye are com- plementary to the left. According to reports, a strikingly lifelike picture is the result of viewing the special— ly tinted photos with the specially tinted glasses. Is it practical? Will the public wear spectacles to see favorite ac— tors in sculptural solidity? Holly— wood thinks not and merely raises an eyebrow whenever anaglyphs are mentioned. I Approximately 45' percent of the freshmen at Washington University are related to former students at that institution, according to figures compiled from registration cards. Although not all freshmen filled out special cards, those who did listed more than 500 relatives who former-. ly attended the university. denim“ E. E. ’s Visit digitizing institute Last Friday afternoon, the Chi. cage Lighting Institute and the current electronics show were hosts to the senior electricals on their weekly inspection trip. Demonstra- tions of the uses of photo-electric cells and Thyratrons were made for the upper classmen, and lectures on those subjects and on the use of color in lighting were given *by Mr. Ger- main of the Westinghouse Electric Company and Mr. Mitchell of the Lighting Institute. Numerous uses of the photo elec— tric cell were explained and demon- strated by Mr. Germain, with the aid of diagrams and apparatus. Mr. Mitchell’s lecture was also fully illustrated by demonstrations made with actual equipment. Pro- ceeding from the elementary process of breaking up white light into the primary colors with the aid of a prism, Mr. Mitchell demonstrated how blue, red, and yellow may be recombined into white by means of a revolving cube. By changing the colors of the light in the room ,the speaker proved the possibility of psychological in- fluence of color, and demonstrated color variation as a method that can be used to decorate rooms. Starting on a new track he showed the quality of light given off by a sodium vapor lamp and briefly enu~ merated its advantages over the cur- rently used gas filled lamps. In con- clusion, Mr. Mitchell demonstrated the strange qualities of ultra-violet light in showing the influence of the light on teeth, Vaseline, and special- ly treated cloth. ARMOUR TECH NEWS [ins swan sacral, RICHARD BERGER gave a very significant demonstration of his Pontiac’s ability to negotiate soft sad on a senior schmiers recent inspection trip to the Hammond beach. Dick is thinking of adding a steam shovel to the car’s equipment. *- Hold your nose for this one: From Prof. Carpenter's metallurgy class comes the following atrocious pun- ning. Martin-its took Pearl—its in his Austin-its ferr-ite. Remember con- tributors, “The bun is the lowest form of wheat." 1? 8 Much to his dismay, ROBERT SOUSA DALTON found that the girls working at Lever Brothers and Amaizo corn products all wore trous— ers. He claims that the reason for this is to cut down on the sex—ap- pea]. t 1h 9% CHUCK RlESZ was stopped by a cop on a motorcycle in Washington par‘k recently. Says Chuck, “Gim— me the- ticket quick, I’m in a hurry.” Si ti! 1* PROIF. B. always gives the Chem- icals spots lbefore the eyes. He prob- ably wears them to bed to keep his ankles warm and then forgets to take them off. zl‘ * 311 ED LINDEN says that GORDON 1 ZWI‘SSLER is the kind of a guy that Facts About Patents lbld” to Junior WEE. “What Engineers Should Know about Patents” was (the subject dis- cussed by Mr. B. A. Schroeder, pat- ent attorney, before the Junior Sec- tion of the W .S. E. last Thursday. After clearing up the common mis- conceptions about patents, the speak~ or defined patents as “rights to ex. clude others from using, making, or selling the'invcntion as covered in Inventions are then classified into two contrasting groups: those that are applicable to patent protection, and those that are not. Among the former are inventions on art, ma— chinery, composition of matter, plant, and improvements on any of them. Those that are excluded from protec— tion by patents are mathematical formulae, and business methods. The process of obtaining a patent consists of the filing of application in the patent office, together with an exact specification, description, and complete diagram of the process. Applications must be filed, the speak- er emphasized, as early as possible, in order to avoid any unexpected legal entanglement. Prior to the filing of application, inventors are advised not to publish any information about ‘lhe process, as in so doing patents are invalid would change the fuse if the lights should go out. al-’ lit Vb Last week’s edition of the News stated that there were six women in “The Red Robe," but the names of lonly five were printed. Could the one that was omitted be FRANCES X. P.'! NEW PROCESS OF [ MAKENG ALCOHOL USES ETHYLENE New methods developed in the lab oratory to produce alcohol from pc- troleum by-products are the basis oil a new plant soon to open near Chi— cago. Already granted a permit to manufacture denatured alcohol, thisl b new unit of the Union Carbide and! Carbon Chemical Corporation will‘ utilize ethylene and other gases in making synthetic alcohol. These light gases, byuproducts which were formerly burned as wasts, result from the cracking processes now used to extract a greater proportion ofr gasoline from crude oil. In view of the fact that the sup- ply of these olefine gases is likely to increase in the future, this meth- od of manufacturing alcohol is like~ ly to increase, according to Benjamin T. Brooks, writing in a recent issue of “Industrial and Engineering Chemistry.” American production of alcohol has always been by fermentuu tion, although synthetic methods have been developed in Europe to utilize carbon monoxide and hydrogen in preparing the constituents of anti— freeze preparations. The new meth- od of using: oil-cracking wastes is so cheap, that it will probably be able to compete with fermentation alcohol made from molasses. The recent at- tempts to use surplus corn in pro- ducing alcohol do not seem econ nomically feasible in spite of pres-l ent low prices. One reason for the success of the first trial plant using this process is the small space required as compared to fermentation alcohol from corn or otherwise. The size of (the Whiting plant is shown 'by the construction ofl Page Three Math Club Has Tails on Complex Numbers Addressed by a speaker who was thoroughly acquainted with his sub- ject and who presented it with ease and fluency, the audience of the Math Club meeting in Science Hall on last Friday was entertained by Herman Bauermeister's talk on complex num- crs. The speaker, starting with a dis- cussion of the classes of numbers, proceeded on with a complete analy- sis of the graphical solutions of com~ plex numbers, stressing methods which were not generally known by those present, and which bordered on the realm of the calculus. One of the types of solution involved the use of a series of parallel planes in addi- tion to the conventional two, and pro- vided for the solutions of; equations when the variables were both real and imaginary. At the close of the presentation of his prepared ma— terial, Bauermeister answered many questions which were forthcoming from an alert audience. storage tanks with a capacity of 7,000,000 gallons. Ethylene, which is usually separat- ed from the other gases by treat- ment at low temperatures, has a number of applications, one of which, strangely enough, is the ripening of fruit. Much of the fruit and veg etable supply coming to the Chicago markets from California has been artificully ripened by this gas. The process which converts these gases into alcohol uses a synthetic method which gives a product of un— usual purity. Nevertheless, the al- cohol is to be entirely denatured since it is to be used industrially and in anti~freezo compounds. 66 r ya. . Is unis sacs EMF BTW? “ll‘ yiilllfiill “Camels have and a great tastoo—rich pleasing," says Herman J. Lamldn, linotype operator. “I've smoked them for many years. I can smoke as stead- ily as I want to, and Camels don’t ever affect my nerves." llbd llbhllbbl Pat Robinson, sports writer, says: “I’Ve been smoking Camels ever since they were put on the market. I smoke at least two packs of Camels a day. They never interfere with my nerves." in: mason A. tor gives his experi- ence: “The enjoyable way of easing strain is smoking Camels," says Ray Baker. “Camels bring back my ‘pep,’ and I can tackle the next big story with renewed energy!" fill lllllbl in... Margaret Nichols, ex- pert Woman reporter, says: “Camels are a. smoother smoke. They have a mild flavor-— delicate and pleasing“ ontirely different from any other cigarette. Camels taste better!” Willi El “Camels are made from costlier tobaccos. They're the real ‘extra value' cigarette," says E. E. C. l’ickwond, ace news-photographer, who often uses first airplanes to get “front page pictures" for a great New York newspaper. “I‘m loyal to Camels," Pickwond eon- tinues. "They taste so much richer and smoother-— uevcr frazzlo your nerves. I have smoked Camels for years and I, too, would ‘walk a mile [or n Camel)”