能够说明光具有微粒性的光电效应是1888年赫兹在证实电磁波存在的实验中发现的。当时这一发现吸引了很多研究者。哈尔瓦克就曾做过这样的实验: (1)用紫外线照射与验电器连接的、充有负电荷的锌板,验电器很快地放电。 (2)用紫外线照射与验电器连接的、充有正电荷的锌板,则无论怎样照射,验电器也 The photoelectric effect that shows that the light is particle-like is found in experiments in 1888 that confirmed the presence of electromagnetic waves. At that time, this discovery attracted many researchers. Halvaque had done such an experiment: (1) with ultraviolet radiation and electroscope connected negatively charged zinc plate, electroscope discharge quickly. (2) with ultraviolet radiation and electroscope connected, positively charged zinc plate, no matter how the irradiation, electroscope