In 1887, Hertz conducted an experiment. It was showing that when a light beam falls on a metal surface, there was some kind of electrical reaction. But he did not attempt to explain it. Can you guess, the cause behind this effect?
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In 1887, Hertz conducted an experiment. It was showing that when a light beam falls on a metal surface, there was some kind of electrical reaction. But he did not attempt to explain it. Can you guess, the cause behind this effect?