§19-1热辐射普朗克的量子假设 Therma1 Radiation and Plank's theory of radiation s19-2光电效应爱因斯坦的光子理论The Photoelectric effect and Einsteins Quantum Theory s19-3康普顿效应 The compton effect§19-1 热辐射 普朗克的量子假设Thermal Radiation and Plank’s theory of Radiation §19-2 光电效应 爱因斯坦的光子理论 The Photoelectric Effect and Einstein’s Quantum Theory §19-3 康普顿效应 The Compton Effect