Word: ultraviolet
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Dates: during 1930-1939
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More than 50 years ago, the late Dr. Ernst Abbe, optical expert of the Zeiss laboratories, decided that the wavelengths of visible light were too long to produce perfect small details. Zeiss scientists 25 years later constructed an instrument which utilized only short invisible ultraviolet. But the importance of this microscope was not realized. The few instruments made were regarded as curiosities...
...Lucas, who wanted to see the smallest detail possible, revived the German's idea, designed an ultraviolet microscope for experimentation. Because ultraviolet is invisible to the human eye he had to focus the rays upon a sensitive fluorescent plate, take pictures of the objects under his microscope. He wanted the instrument primarily to study metals, but since it was so powerful he and other scientists applied it to living cells. The shallowness of focus allowed them to take horizontal cross sections 1/100,000 of an inch apart...
...this time, the largest ordinary microscopes gave a practicable magnification of 1,500 times. Microscopists thought that the instrument had reached the limit of its development. Because he found ultraviolet difficult to control, Mr. Lucas also worked with visible light, developed an instrument which was about four times as powerful. It magnified 6,000 times. The newest microscope which Mr. Lucas announced last week is twice as powerful, makes possible the small detail of the ultraviolet and the greater magnification of visible light...
...spread the savor of the food through the air and follow it to the tables. No knives, spoons or forks will be required and the food may be taken with the fingers or simply aspired with the breath. Special radiating lamps will hang over the tables to radiate with ultraviolet rays the color of the food and excite the appetite. When all this has been accomplished the human race will be happy in the enjoyment of food, old age will become unknown and men and women will live again as long as Methuselah...
...wall. Where irritating noises cannot be controlled by insulation, they will be neutralized by other noises (TIME, Dec. 15). Workmen will hear only enough sound to prevent them from being distracted by complete silence. They will be illuminated by constant artificial daylight containing a small percent of healthy ultraviolet, will breathe air which has been washed, heated, humidified. The ten million cubic feet of air will be changed every ten minutes. Contaminating gases and machine dirt are to be drawn out through hoods into an underground exhaust system...