Word: germeshausen
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Dates: during 1953-1953
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...picture was taken with a special camera made by Edgerton, Germeshausen & Grier, Inc. of Boston. Its shutter has no moving parts, only two sheets of polarizing material, something like the stuff in the glasses that are used to view 3-D movies. When light passes through the first of them, it is polarized so that its waves vibrate in a single direction. Then it cannot pass through the second sheet, whose plane of polarization is set at right angles to that of the first sheet. In this condition the shutter is closed...
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