How Is Thomson Used To Discover The Electron
1. Provide a comprehensive description of the experiment Thomson used to discover the electron.
Thomson was experimenting with electric discharges in electric discharge tubes when he found that it would glow when a high voltage was applied in a gas volume at low pressure, while it was known that the glow in the gas was something to do with the cathode and the negative pole of the high voltage, Thomson continued with his experiments with the rays coming from the cathode and he found that the rays where deflected by magnetic and electric fields, they were electrically charged. So, by measuring the deflecting cathode rays and how they were deflected by the different fields he was able to figure out the ratio between the electric charge and the mass of the ray’s e/m = 1.8 10-11 …show more content…
But the plum pudding model was abandoned in favour of the Rutherford atomic model, this model has electrons orbit the tiny positive nucleus.
3. Provide a comprehensive description of the gold foil experiment that Rutherford and his associates used to further investigate the structure of the atom.
Rutherford had a piece of gold foil and the opposite to gold, a zinc sulfide screen that emits a flash of light when hit by an alpha particle, the gold was placed in front of the screen and with a gap between the two as too not touch, most of the alpha particles passed straight through but a very small fraction bounced off at different angles because of the very high velocities, (the speed and high mass of the alpha particles was needed for them too bounce off) they bounced off when hitting the golds nucleus at a high velocity.
4. Explain in detail how the findings of the gold foil experiment were incorporated in the Rutherford model of the
Thomson was experimenting with electric discharges in electric discharge tubes when he found that it would glow when a high voltage was applied in a gas volume at low pressure, while it was known that the glow in the gas was something to do with the cathode and the negative pole of the high voltage, Thomson continued with his experiments with the rays coming from the cathode and he found that the rays where deflected by magnetic and electric fields, they were electrically charged. So, by measuring the deflecting cathode rays and how they were deflected by the different fields he was able to figure out the ratio between the electric charge and the mass of the ray’s e/m = 1.8 10-11 …show more content…
But the plum pudding model was abandoned in favour of the Rutherford atomic model, this model has electrons orbit the tiny positive nucleus.
3. Provide a comprehensive description of the gold foil experiment that Rutherford and his associates used to further investigate the structure of the atom.
Rutherford had a piece of gold foil and the opposite to gold, a zinc sulfide screen that emits a flash of light when hit by an alpha particle, the gold was placed in front of the screen and with a gap between the two as too not touch, most of the alpha particles passed straight through but a very small fraction bounced off at different angles because of the very high velocities, (the speed and high mass of the alpha particles was needed for them too bounce off) they bounced off when hitting the golds nucleus at a high velocity.
4. Explain in detail how the findings of the gold foil experiment were incorporated in the Rutherford model of the