Word: ultraviolet
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Odors of roast beef, warm rubber and ozone pervaded the 22nd floor of the Kansas City (Mo.) Hotel Kansas Citian last week. The odors arose from electric knives, heat applicators and ultraviolet light generators in operation. Those machines and a variety of similar medical machines, ornamented with shiny chromium and nickel, dials, gauges, thermometers, bulbs, motors, rheostats, pedals, levers, knobs and buttons were working because 400 physicians who are sincerely trying to put physical therapy on a respectable basis in the U. S. met in Kansas City to conduct a Congress of Physical Therapy...
Rancidity Preventive. Now that they have learned how to prevent it, chemists revealed that bacon, potato chips, cakes, candy and similar foods become rancid if wrapped in ordinary transparent cellulose sheets. Cause: ultraviolet light which reaches the food through the transparent wrapper. Cure: tinting cellulose wrapping paper with a faint yellow dye which obstructs ultraviolet light...
...between harvest and planting. Others followed in slow but steady succession. Some kinds of apples with green-colored skins may be just as ripe and tasty as red apples but suffer in market competition because buyers like the appearance of red apples. It was learned that 48 hours of ultraviolet radiation turns green-colored apples a beautiful, even, overall shade...
Entomologist Frank Eugene Lutz of Manhattan's American Museum of Natural History has discovered that bees can see ultraviolet light. If the bee's food receptacle is labeled with a card painted ultraviolet-white, the bee will soon learn to select that card among plain white cards which to the human eye seem indistinguishable from the one selected. No entomologist would use this visual faculty to lure to destruction the useful honey bee. But in Lafayette, Ind., scientists of Purdue University pondered ways of coping with the codling moth', a mottled, foreshortened little creature whose larvae develop...
...iconoscope was ready for use as the "eye" of a powerful ultramicroscope. Its field of operation extends on both sides of the visible light spectrum -up to 10,000 angstrom units on the infra-red range, down to 1,000 on the ultra-violet.* This point on the ultraviolet side is 2,000 units lower than in other ultramicroscopes. If organisms never seen by human eye do exist in the filtrable viruses of common colds and infantile paralysis, they might be detected by light of such short wavelength. Light of longer wavelength they escape as minnows escape a loose-meshed...