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jan 1, 1907 - Alpha particles & helium-4

Description:

In 1907, Ernest Rutherford & Thomas Royds determined that alpha particles were almost identical to helium-4.

Added to timeline:

Helium History Timeline

By Kingsley Lim

4 months ago

2

0

21

Date:

jan 1, 1907

Now

~ 119 years ago

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