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?
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?
