Einstein's wave-particle theory explains how light behaves as photons interacting with electrons in a dual particle-wave nature.
Einstein's wave-particle theory describes light as photons that can interact with electrons in a way that resembles particle collisions. When electrons move between energy levels, they either absorb photons when moving to a higher level or emit photons when moving to a lower level. This dual nature of light, being both a particle and a wave, is a fundamental aspect of quantum mechanics.
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