Word: uranium
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HALL OF SCIENCE. Atomsville, U.S.A., is strictly for small fry. So that parents will take the hint, the entrance is only five feet high. The little visitors can prospect for uranium on a world map, produce electricity by riding bicycles, shoot "neutrons" at "uranium atoms" on a pinball machine, and measure their weight in atoms. They seem to have plenty of fun, whether or not they learn very much about atoms...
HALL OF SCIENCE. Atomsville, U.S.A., is strictly for small fry. So that parents will take the hint, the entrance is only 5-ft. high. The little visitors can prospect for uranium on a world map, produce electricity by riding bicycles, shoot "neutrons" at "uranium atoms" on a pinball machine, and measure their weight in atoms. They seem to have plenty of fun, whether or not they learn very much about atoms...
...decay of radioactive materials at rates that cannot be altered by heat, cold, pressure, magnetism, or any other influence.*Such reliability means that ancient tombs can be dated by the decay of carbon 14; the age of the earth's most ancient rocks may be measured by decaying uranium...
Mining in Canada seems to follow a pattern of seven years of fat, seven years of lean. The great uranium boom pumped $10 billion into the Canadian economy between 1950 and 1957, then fizzled. Now, after seven fairly slender years, a new mining rush is on. Some 900 companies are drilling for metals and oil from New Brunswick to British Columbia...
...physicist, who with Enrico Fermi in 1942 triggered the world's first nuclear chain reaction and thus made possible the atomic bomb; of a heart attack; in La Jolla, Calif. A Hungarian-Jewish refugee from Hitler's persecutions, Szilard foresaw as early as 1939 the possibility of uranium bombs, persuaded Einstein to lend his famous name to a letter to President Roosevelt in which he pointed out the danger that Germany might beat the U.S. to such a weapon; once his advice was heeded and the bomb developed, Szilard looked with regret upon the monster he had helped...