The author died in 1931, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 80 years or fewer.
Conclusion page of [[Albert Abraham Michelson]]'s handwritten draft paper on the velocity of light, during his time in the U.S. Navy. Source: Physics Dept, Case Western Reserve University {{PD-old}} {{PD-user|Brian0918}}
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