The Geiger Marsden Rutherford Gold Foil Experiment - IB Physics
The Geiger-Marsden Experiment (also called the Rutherford Gold Foil Experiment) disproved the plum pudding model of an atom and predicted instead that an atom has a small, dense nucleus surrounded by mostly empty space. This lecture explains how the experiment was done and what conclusions were drawn from it.
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0:00 Facts about the experiment
0:33 The plum pudding model
1:26 Why gold foil?
2:25 Alpha particles
3:19 Predictions of the plum pudding model
5:34 Results of the experiment
6:07 Why this implies the nuclear model
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