Word: instrument
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Dates: during 1940-1949
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...short-answer test the candidate is examined on three subjects which he picks from the following nine: biology, chemistry, physics, French, German, Latin, Spanish, social studies, spatial relations (e.g., shown a profile view of a telephone instrument, a candidate may be required to draw the unseen dimensions...
...Indies, which had been pumping out tales of U.S. weakness, Jap might for months before war broke in the Pacific; of Radio Falange in Madrid and Radio Vichy, whose assignment is to revile Yankee culture and Yankee "imperialism" for Latin American ears; of Radio Saīgon, now an instrument of Jap propaganda in Southern Asia...
...great help was a remarkable new foreign-body detector which Dr. Moorhead had with him. It was invented by Samuel Berman, a research engineer in the New York City Transit Department. The cigar-sized instrument works on the principle of a radio tube; when held over a wounded man a long, pencil-like apparatus shows on a recording dial the presence and exact location of a metallic substance in the body. Dr. Moorhead's detector is the only one that has been made; it is still in Honolulu. Said he: "It proved invaluable for saving precious time...
...that when a sample of rock is bombarded with neutrons (heavy nuclear particles) from the cyclotron, some elements in the ore become radioactive and give off particles which can be detected either 1) on a photographic film in contact with the ore, or 2) with a Geiger counter, an instrument which clicks or marks a tape as each particle shoots through it. Since each element has a unique rate of radioactive decay (e.g., radioactivity of manganese declines by one-half every 2.5 hours, of gold every 2.5 days), the identity and quantity of the hidden elements is readily determined...
...theory of crystal-balling, sitting on eight cushions placed on top of an easy chair in order to shield himself from mundane vibrations. The pillows put his chin about on the level of the top of a bookcase, and there, resting on a piece of black velvet, sits the instrument itself...