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2 jul 1879 ano - Sir William Crookes experiments with cathode-ray units

Descrição:

1879 Sir William Crookes’ experiments with cathode-ray tubes led him to demonstrate that the cathode-ray has a negative charge.

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BySaisriram Sanjai

15 mai 2018

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2 jul 1879 ano

Agora

~ 146 years ago

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