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90. Millikan and Ehrenhaft: a lesson in scientific thinking

Today (June 2nd) is the 102nd anniversary of Robert Millikan’s publication of his measurements of the charge of the electron. But he had a competitor – the congenial Viennese physicist Felix Ehrenhaft, a frequent host to Einstein and others. So how come Millikan got a Nobel Prize for his work, while Ehrenhaft has disappeared into scientific obscurity. It’s a ...

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Radio Interview: The Greatest Experiments

BBC “Today” programme A recreation of Robert Millikan’s famous “oil drop” experiment, in which he measured the charge of a single electron by watching how the movement of oil drops sprayed into an electric field changed as they picked up randm charges from the air. Listen to podcast

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