... short-wavelength regions of the continuum of electromagnetic waves.Chapter XXChapter XX Quantum theory of light Quantum theory of light§1. Blackbody radiation. Planck’s theory of radiation§2. Photoelectric ... ).2.2 Einstein’s quantum theory of light:To overcome the difficulty of classical physics, Albert Einstein introducedthe quantum theory of light, and developed the correct analysis of thephotoelectric ... earlier Planck’s theory of radiation, the postulates of Einstein’s theory is as follows:Light consists of small “packages” of energy called photons orlight quanta.The energy of a photon is...