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Who discovered the presence of new radiation in a discharge and called them canal rays?
Who discovered the presence of new radiation in a discharge and called them canal rays?
What was the charge of the radiation discovered by E. Goldstein in a discharge?
What was the charge of the radiation discovered by E. Goldstein in a discharge?
What was known about the atom by 1900?
What was known about the atom by 1900?
Who identified the electron in 1897?
Who identified the electron in 1897?
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