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Who discovered the photoelectric effect in 1887?
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photoelectric effect
Explanation of the photoelectric effect.
The photoelectric effect was discovered in 1887 by the German physicist Heinrich Rudolf Hertz.1
While investigating radio waves, Hertz observed that ultraviolet light influenced the voltage at which sparking occurred between two metal electrodes. This phenomenon, which involves the emission of electrons from a material when exposed to light or other radiation, was later clarified by Philipp Lenard in 1902 and famously explained by Albert Einstein in 1905.12