J14.03.08 Photoelectric Effect Demonstrator
It is a more useful instrument for research the rule of photoelectric effect:
-- Electrons inside an object will escape to the surface immediately when light irradiates on it.
-- Initial kinetic energy of the escaping electrons has nothing to do with intensity of light, but increased along with increment of light frequency.
-- Saturation current is positively rated to intensity of light.
-- The so called 'red limit frequency'.