Word: plastics
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...result is a blur to the naked eye. To separate the two pictures so that each eye sees only the image meant for it, Polaroid sheets must be used in the beam splitter and also in glasses worn by the audience. Polaroid is a thin plastic containing myriads of tiny, imbedded, needle-like crystals of iodo-sulfate of quinine, all parallel. When a beam of light strikes the sheet all light waves that are vibrating in the plane of the crystals pass through, all others are stopped. Thus the two beams of light from the projector are filtered so that...
When butadiene is polymerized with styrene the result is Buna-S, developed in Germany but since improved by Standard Oil (of N.J.). Styrene itself has no relation whatever to natural rubber. It is made from benzene, principally by the Dow and Monsanto companies, and gives an excellent crystal-clear plastic when polymerized by itself. Combined with butadiene in Buna-S, the product is high in tensile strength and resistant to abrasion. In some tests it has proved distinctly superior to natural rubber in wearing qualities. (Some Buna-S truck tires have lasted over 50,000 miles.) The Baruch plan calls...
...three degrees better than the Ritz," said A.F. of L.'s San Pedro-Wilmington Labor Review. More important, it is a shining example of wartime housing construction. Plumbing fixtures are rough cast iron with plastic handles. Some toilet fixtures have glass pipes. There are no bathtubs or private bathrooms, just showers in central bathrooms. Only lighting facilities are wall plugs for wood-stemmed, paper-shaded floor lamps (one for every man). Bedsprings have wooden bases. Interior walls are mainly plywood...
Libbey-Owens-Ford went into plastics to manufacture the plastic sandwich-filler used between pieces of plate glass to make shatterproof automobile and airplane windshields. Recently Du Pont, pioneer of plastics, announced that it had put its sandwich filler to completely new uses...
...Ordinary clear plastics have a "scratch resistance" about 500 times less than plate glass, but a new Pittsburgh plastic "C.R.39" is claimed to have a resistance of only ten to 30 times less than plate glass...