@wellerstein Also, how can Russian #meteor be 500kt (v. Hiroshima 15kt) and yet cause comparatively so little damage?
Replying to @AriBRubin
@AriBRubin The Hiroshima bomb went off only 2,000 feet above the city, a height chosen to optimize the destructive effects of the blast.
11:45 AM - 17 Feb 2013
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