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Chemistry  /  Chem 0783  ·  Atom · ~20 seconds

Wave-Particle Duality of Light

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Light behaves as a wave in phenomena like diffraction, but the photoelectric effect shows light also delivers energy in discrete packets called photons.

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A photon's energy, E = hν, explains why light must exceed a threshold frequency to eject an electron, unlike a pure-wave model.

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Wave and particle are two descriptions light exhibits in different experiments, not separate kinds of light alternating.