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| Letter from Albert Einstein to the United States Navy’s Bureau of Ordnance describing the forces experienced by a torpedo’s firing pin mechanism upon impact with a solid object, 4 Jan 1944, page 1 of 2. | Letter from Albert Einstein to the United States Navy’s Bureau of Ordnance describing the forces experienced by a torpedo’s firing pin mechanism upon impact with a solid object, 4 Jan 1944, page 2 of 2. |
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