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PE history by Mihai vers_2, Stoletov he iluminated A cooler, Heinrich Hertz he noticed The illumination of the electrons, Negative it becames Neutral, The illumination of the electrons it favors The electric discharge, Neutral it becames Positive, Photoelectric Effect explicate by Einstein, Positive it remains ????, Corpuscular nature it was confirmed by Millikan's experiments (1916), A Zn plaque he noticed Neutral, A Zn plaque he noticed Negative