Amanuelmanayew96 Amanuelmanayew96

20-02-2021
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who measure the mass of electron for the first time

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divaparra014 divaparra014

20-02-2021

Thomson
In the 19th century, the mass-to-charge ratios of some ions were measured by electrochemical methods. In 1897, the mass-to-charge ratio of the electron was first measured by J. J. Thomson.

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