Word: leveler
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Dates: during 1950-1959
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...Huston and Miller, should tell on its own when the reactor is starting an excursion. The best way to trigger its action is to combine a pad of material containing uranium with a layer of high-melting solder. When the neutrons in the reactor rise above a critical level, showing that an excursion has started, the uranium fissions at a rate that creates enough heat to melt the solder. Then high-pressure gas will shoot neutron-absorbing poison into the reactor. Even if other controls have failed, this last-ditch nuclear fire extinguisher will keep the reactor from exploding...
...about 7½ Ibs. per sq. in. -the pressure normally found at 18,000 ft. Instead of ordinary air (21% oxygen), it will be filled with an artificial atmosphere containing at least 40% oxygen, to give the spaceman the same quantity of oxygen he would enjoy at sea level. During launching and reentry, the space pilot will have his pressure suit inflated. In relaxed, straightaway flight, he will be able to deflate his suit, open his visor and rely on cabin air. The air will be filtered, probably through lithium hydride, to remove carbon dioxide and excess water vapor from...
...stand travel at any rate of speed provided that it is constant. What hurts is a too-abrupt change in speed or direction. Standard of measurement for such changes is the g (from gravity), which is equal to the acceleration produced by the earth's pull at sea level. Unprotected and in normal sitting position, the body cannot stand more than about 3½ g for more than about 15 seconds. Semisupine, even without a pressure suit, it can stand 6 g for 4½ minutes, as much as 12 g for only six seconds. But in blast...
...Freight carloadings in the first week of May were 26% below the year-ago level. ¶ Passenger losses dipped even deeper* than last year, when they brought a $700 million deficit...
...reported that per-share earnings in the first four months slid to 34? (v. 82? a year ago), but President Robert S. Macfarlane. almost alone among U.S. railroaders, predicted that a pickup in grain shipments and a tighter control of expenses would lift May earnings close to the 1957 level and bring a "relatively good June...