Wave-Particle Duality of Light
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
Light behaves as a wave in phenomena like diffraction, but the photoelectric effect shows light also delivers energy in discrete packets called photons.
Show
A photon's energy, E = hν, explains why light must exceed a threshold frequency to eject an electron, unlike a pure-wave model.
Watch for
Wave and particle are two descriptions light exhibits in different experiments, not separate kinds of light alternating.