Wednesday, February 2, 2022
Some experiments (interference, diffraction) seem to suggest that light behaves as a wave, but others (photoelectric effect, thermal radiation, Compton effect) suggest light comes in discrete quanta: photons.
The wave and particle properties of light are one; it is not possible to separate the light into particles and waves.
Light does not "come" in waves nor particles. Simply, it interacts with matter in ways that resemble both waves and particles in different situations.
The same wave-particle duality is seen in other objects (like electrons), which were previously believed to be only particles.