How did Joseph thomas discover electrons?

Answer 1

Joseph John Thomson discovered electrons in 1897 through his experiments with cathode rays. He observed that these rays could be deflected by electric and magnetic fields, indicating that they were composed of charged particles. By measuring the charge-to-mass ratio of these particles, he concluded that they were much smaller than atoms, leading to the identification of electrons as fundamental components of matter. This groundbreaking work significantly advanced the field of atomic physics.