y****e
发帖数: 23939 | 1 【 以下文字转载自 Joke 讨论区 】
发信人: ADOMET (抗抑郁), 信区: Joke
标 题: 银条
发信站: BBS 未名空间站 (Fri Jan 7 13:55:26 2011, 美东)
The U.S. War Department borrowed 14,000 tons of government silver in its
drive to make the world’s first atomic bomb. That silver was shaped into
coils and busbars, current-conducting strips, to operate a giant mass
spectroscopy plant in eastern Tennessee. That plant processed the weapons-
grade uranium used in the bomb dropped over Hiroshima, Japan, in August 1945.
http://www.americanscientist.org/issues/feature/2011/1/
from-treasury-vault-to-the-manhattan-project | y****e
发帖数: 23939 | 2 为什么用那么多的银？导电率高一些？有那么重要吗？ | m*t
发帖数: 7490 | 3 战争时期铜都拿去做炮弹了，只好上银子。
可见老美也是下本钱的 |
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