A beam of cathode rays, or particles, passes through an electric field and a magnetic field. The experiment is arranged so that the electric field causes the beam of particles to be deflected in one direction, and the magnetic field deflects the beam in the opposite direction. By balancing the effects of these fields, the charge-to-mass ratio of the particles can be determined. These negatively charges particles were later called Electrons.
Saturday, March 7, 2009
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