Small Wonder: The Magnificent Ball Bearing
2021-8-20u2002·u2002Small Wonder: The Magnificent Ball Bearing. On an August afternoon in 1943, a long column of American B-17s arrived over the Bavarian city of Schweinfurt. The bombardiers watched the city crawl by under the lenses of their top-secret Norden bombsights, made delicate adjustments, and, from four miles up, dropped eighty bombs into a mile-square ...
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