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29 Jul 1927 Jahr - A.A. Michaelson makes most accurate measure of speed of light

Beschreibung:

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

Zugefügt zum Band der Zeit:

AP US History

10 Mai 2018

1

0

1288

Datum:

29 Jul 1927 Jahr

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~ 96 years ago

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