Word: musts
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Dates: during 1950-1959
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...Metropolitan Museum last week. In August it will return to Turkey. The find opens a new chapter in the history of art, providing a missing link between the culture of the Euphrates basin and that of archaic Greece. Similarities in style show that Greek traders and marauders must have brought home in their hollow ships a mass of Phrygian treasure-which in turn helped shape Greek...
...amateur is over, are appalled at the risky stunts of rocket buffs from 16 to 60. So serious is the situation that the American Rocket Society has issued a 76-page booklet cataloguing the dangers and advising the amateurs to stop. Said A.R.S.: "All practical means must be taken to prevent the manufacture of propellants or rockets by amateurs...
Rockets get their zip by means of a restrained explosion; the rapidly burning propellant must generate hot gases at precisely the right pressure. If the pressure is too low, the rocket does not fly; too high, and it bursts like a bomb. Very slight defects or miscalculations can raise the pressure to the danger point. The rocket can explode if the nozzle is a few thousandths of an inch too small. A solid propellant may crack, sharply increasing the burning rate. Unburned propellant can block the nozzle, or flame can burn a hole in the thin casing. As any Cape...
Mixing propellants from drugstore or agricultural chemicals is just as perilous. A.R.S. entrusts its members with a long list of dangerous combinations, urges that the list be kept secret so that youthful amateurs will not get any new ideas. Particularly touchy are propellants that must be mixed hot. Another bad actor, already well known to most kids: ordinary household match heads, which are apt to explode disastrously while being crammed into a makeshift rocket chamber...
When Jupiter occults a bright star, astronomers will learn a lot about its atmosphere, which is probably thousands of miles deep and boiling with enormous storms. Until that happens, which may not be soon, they must be content with shreds of information picked up in other ways. Jupiter sends out fairly powerful radio waves, which first seemed to indicate that the temperature of the atmosphere is surprisingly high: up to 1,000° F. Odder still, the temperature apparently fluctuates over a wide range...