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29 jul 1927 ano - A.A. Michaelson makes most accurate measure of speed of light

Descrição:

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

Adicionado na linha do tempo:

AP US History

10 mai 2018

1

0

1508

Data:

29 jul 1927 ano

Agora

~ 97 years ago

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