Word: beams
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Dates: during 1950-1959
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...inboard engine had been repaired. Three and a half hours and nearly 700 miles later, flying through a drizzly night, the plane approached Roberts Field near the Liberian capital of Monrovia. Veteran Pilot Frank Crawford, 38, asked for landing instructions from the tower. He reported trouble with the radio beam on which he was flying-the stronger beacon at Dakar, 762 miles away in French West Africa, seemed to be interfering with local signals. After that, silence...
...kept order at hot-dog roasts, solicited subscriptions for magazines, collected tin cans and scrap paper, fumbled at operating a movie camera, and was interrupted almost daily by the order to file in with my class to see a dull, poorly done film because audiovisual education is on the beam...
...four days, Matthew enjoyed a rare kind of Korean leave. "It was sunny, like London in June," said Benita. "We took long walks in the country, and Matthew would introduce me around. He'd say, 'Look at it, look what's turned up,' and just beam. We had wonderful biscuits and gin in the huts with Matthew's friends. They had their pin-up girls sort of coyly half-turned to the wall...
...simulate these peculiar conditions, California scientists use a peculiar apparatus: a "molecular beam" developed by Physicist Franklin C. Hurlbut. First, all possible air is pumped from the stainless steel tube (which takes a week of pumping). At one end of the tube is a small "source chamber" containing nitrogen gas. When this is heated by a furnace, the nitrogen molecules pick up kinetic energy and zigzag through the chamber at great speed. Those that happen to be shooting in the right direction pass through a hole one-fiftieth of an inch in diameter that leads to the evacuated tube...
...nitrogen molecules enter the tube as a "beam" that can be deflected and controlled almost like a beam of light. The hotter the source chamber, the faster the molecules move. When the temperature in the source chamber is 1,000° C., the molecules in the beam speed at 1,800 m.p.h. Models of aerodynamic surfaces placed in this beam behave just as if they were moving at 1,800 m.p.h. through the ping-pong-ball atmosphere on the frontier of space...