Thermal Radiation Statistics Support Quantum Picture
Einstein used the statistical behaviour of black-body radiation to argue that purely classical wave theory could not account for all observed fluctuations in radiant energy.
Albert Einstein · Event
Einstein used the statistical behaviour of black-body radiation to argue that purely classical wave theory could not account for all observed fluctuations in radiant energy.

Einstein used the statistical behaviour of black-body radiation to argue that purely classical wave theory could not account for all observed fluctuations in radiant energy.