Sagot :
Answer:
In 1897, J.J. Thomson discovered the electron by experimenting with a Crookes, or cathode ray, tube. He demonstrated that cathode rays were negatively charged. ... The negative electrons represented the raisins in the pudding and the dough contained the positive charge.
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In 1897, J.J. Thomson discovered the electron by experimenting with a Crookes, or cathode ray, tube. He demonstrated that cathode rays were negatively charged. ... The negative electrons represented the raisins in the pudding and the dough contained the positive charge.