'ATOM SCALE NEARS INTANGIBLE REALM; Physicists Are Told of Mass Spectograph Raising Power From 5,000 Units to 29,200 HEAVIEST ELEMENT SPLIT Separator Obtains 18-10 of a Millionth of a Gram of Uranium 238 in 3 Hours', New York Times
Tags: 1940; 1940-4-27; 1940s
'Hawhaw and Heehaw.', The New Yorker
Tags: 1940; 1940-4-27; 1940s; Engineering; Kahn, E. J.; news; propaganda; radio; short wave; Telecommunications
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