Thomson's Atomic modelIn the late 19th century has been discovered a type of radiation, called a cathode ray (cathode ray) trial of a scientist named Julius Plicker used glass tubes to pump the air out, and there is an electronic 2 trot side (anode and cathode as the positive electrode is the negative electrode) of the glass tube and the electrical potential is high. Cause radiation within a glass tube Called the cathode ray
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