JJ+Thomson(GD)

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 (BUTT FART)JJ Thomson9MR.T) SHAWTY 1856-1940 Discovery: 1897 Thomson’s most important discovery to modern science was the discovery of the electron in 1897. Thomson made his discovery with the help of a “crooks tube.” The tube was constructed out of glass and contained two wires, one on each side of the tube. The inside of the tube was kept at a vacuum, so when current was put through a wire at one end the electricity would arc to the other side. Thomson theorized that the “cathode rays” inside the tube were actually a stream of particles smaller than the atom. This assumption was actually correct, and the small particles were electrons. He found that these particles had a charge by manipulating the beam of light with a magnet or electrical field. Thomson made a model called the “plum pudding model,” the model is what Thomson theorized the structure of the atom to look like. It was electrons surrounded by a positive jelly. = = Plum Pudding Model