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29 июл 1927 г. - A.A. Michaelson makes most accurate measure of speed of light

Описание:

2.990 +/- .0002 x 10^8 m/s | [real is about 3x10^8 m/s] | Based on revolving mirrors at the tops of two California mountains

Добавлено на ленту времени:

AP US History

10 мая 2018

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Дата:

29 июл 1927 г.

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~ 97 г назад

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