RT @ptak Niels Bohr on motorcycle (1931?) via AIP #histsci http://ow.ly/suilP
Replying to @rmathematicus
@rmathematicus @ptak That's George Gamow's motorcycle, in fact. With Margrethe Bohr on the back. At their summer home in Tisvilde, Denmark.
9:30 AM - 11 Jan 2014
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