The discovery of the electron as a subatomic particle was a result of

The discovery of the electron as a subatomic particle was a result of experiments with cathode ray tubes.  

J.J. Thomson discovered the electron, the first subatomic particle in 1897. He used discharged tube experiments.

Thus, the discovery of the electron as a subatomic particle was a result of experiments with cathode ray tubes.  

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The discovery of the electron as a subatomic particle was a result of English physicist J.J. Thomson

astronomers such as edwin hubble.