Word: rster
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Dates: during 1930-1939
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...radiation from somewhere was constantly ionizing the air in electroscopes. Some theorists thought the source was radioactive material in the ground. If this were so, the radiation should have fallen off markedly at short distances above ground. By carrying instruments up in balloons, Hess, Gockel and Kolhörster killed off the terrestrial radioactivity theory. In 1911 Hess made seven flights to 3,000 ft., found no decrease in the rays whatever. Later, nearly six miles up, he found them seven times stronger than on the ground. "A radiation of very high penetrating power," he wrote, "enters our atmosphere from...
...Wilberforce. Osborn similarly tangled with John Roach Straton and William Jennings Bryan ("The Earth," said he, "speaks to Bryan but he doesn't hear a sound"). An able administrator, he turned his museum into a splendidly staffed and equipped capital of scientific research. Died. Frau Elizabeth FÖrster-Nietzsche, 89, only surviving sister of the late Philosopher Friedrich Wilhelm Nietzsche, his nurse and secretary during the eleven years before his death in 1900; in Weimar...