Question

How did J J Thomson discover the electron?

Answer 1

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. ... Thomsonrealized that the accepted model of an atom did not account for negatively or positively charged particles.

Answer 2

in a air-proof tube Thomson lighted cathode ray and saw it is bending to the positive plate and if a light weighted fan is took in the middle , then it begins to turn......thus he supposed that cathode ray consists of light weighted particles..... he called it negetrons



after a few years , george stoni named the particles as electrons