Word: nitrogen
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Dates: during 1950-1959
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...offset the ferocious heat generated by the air's friction, the X-15's skin is made of Inconel X, a heat-resisting alloy that keeps its shape at a brightly glowing 1,350° F., when aluminum and ordinary steel have long since softened. Liquid nitrogen, which will not support combustion, is used as a coolant for both pilot and equipment, and is also vaporized to maintain pressure in the plane's interior. The pilot, who cannot breathe pure nitrogen, will have a private oxygen atmosphere inside his space suit...
...Evans summit boasts the Inter-University High Altitude Laboratory. There, climbers found a familiar piece of equipment: a massive, steel low-pressure chamber. Dr. Balke wanted to know whether his conditioned volunteers would be as subject to the bends and the chokes (painful, potentially fatal disorders caused by nitrogen bubbling out of solution in the blood) as a man zooming up from sea level...
...lacy pattern of little round balls in the background of this week's cover is from a deoxyribo-nucleic-acid molecule model built at Manhattan's Sloan-Kettering Institute. The grey balls represent carbon atoms; blue is phosphorous; yellow is nitrogen; red is oxygen; white is hydrogen. Molecules do not look like this, of course. The atoms in them are much too small to be seen, even with an electron microscope. The pattern shown is a small part, somewhat simplified, of the DNA molecule, which geneticists now believe is the carrier of heredity and the chemical master...
...have been slowed by the fact that the liquid gases used in nonfood products have been ruled out by the Food and Drug Administration. (Compressed gases are now in use in a few food products but often lose their pressure before the food is exhausted, though recently developed compressed nitrogen shows promise of whipping the problem...
Photogenic Scuttling. Roughly half of each 30-minute installment of Sea Hunt happens underwater. Skindiving Hero Mike Nelson (Bridges) has battled the odds in the form of sharks, octopuses, moray eels, manta rays, alligators, giant sea turtles, Aqua-Lunged badmen-and "rapture of the deep" (nitrogen narcosis). The whole production crew is equally at home at sea; Ziv Producer Tors, 42, is a zealous sea hunter, and Secretary Parry holds the world's depth record for women: 209 ft. down, off Catalina...