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Wave–particle duality
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<p>Wave–particle duality is the concept in <a href="/facts/Quantum_mechanics/BRc3Mzgr">quantum mechanics</a> that fundamental entities of the universe, like <a href="/facts/Photon/mFNhAEzA">photons</a> and <a href="/facts/Electron/L0KBo5cW">electrons</a>, exhibit <a href="/facts/Particle/JHKr2w6h">particle</a> or <a href="/facts/Wave_(physics)/I3EeyInV">wave</a> properties according to the experimental circumstances.: 59 It expresses the inability of the <a href="/facts/Classical_physics/gGnINVPE">classical</a> concepts such as particle or wave to fully describe the behavior of quantum objects.: III:1-1 During the 19th and early 20th centuries, <a href="/facts/Light/jeofpMn4">light</a> was found to behave as a wave then later was discovered to have a particle-like behavior, whereas electrons behaved like particles in early experiments then were later discovered to have wave-like behavior. The concept of duality arose to name these seeming contradictions. </p>