about jj thomson invention
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Discovery of the electron
Thomson in 1897 was the first to suggest that one of the fundamental units was more than 1,000 times smaller than an atom, suggesting the subatomic particle now known as the electron. Thomson discovered this through his explorations on the properties of cathode rays.
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In 1897, Thomson showed that cathode rays were composed of a previously unknown negatively charged particle of very small mass compared to its electric charge. It was later called the electron and was the first subatomic particle to be found.
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