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• 12:04, 25 April 2022 Physdemo talk contribs created page Photoelectric effect (Created page with "{{NewDemo|subject=Modern|topic=Quantum Physics|file1=photoelectric_effect.JPG|file2=photoelectric_effect_1.JPG}} First, the zinc plate connected to the top of the electroscope must be rubbed with steel wool to take away the zinc oxide that will naturally occur on the surface. The electroscope is charged up with electrons from a rod that has been rubbed with fur. Scrape the rod along the plate attached to the top of the electroscope to fully charge the electroscope. When...")