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wave-particle duality

American  
[wayv-pahr-ti-kuhl-doo-al-i-tee] / ˈweɪvˈpɑr tɪ kəl duˈæl ɪ ti /

noun

  1. Physics. in quantum mechanics, the principle that fundamental physical entities such as electrons and photons behave both as waves and as particles.


wave-particle duality Scientific  
  1. The exhibition of both wavelike and particlelike properties by a single entity. For example, electrons undergo diffraction and can interfere with each other as waves, but they also act as pointlike masses and electric charges. The theory of quantum mechanics is a attempt to explain these apparently contradictory properties exhibited by matter.

  2. See also complementarity


wave-particle duality Cultural  
  1. In quantum mechanics, the condition that allows every quantum to appear like a wave in some experiments and like an elementary particle in others.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Among the most important discoveries was wave-particle duality, the idea that particles can also act like waves.

From Science Daily Apr. 28, 2026

You don’t need a master’s in wave-particle duality to enjoy the cosmic playground of coincidence and fate that Kröger has in mind.

From Los Angeles Times Oct. 11, 2024

The wave-particle duality reveals the queer, nonbinary nature of quantum mechanics.⁠

From Salon Apr. 20, 2021

This new model for light provided the foundation for one of the most important ideas in quantum theory: wave-particle duality.

From Textbooks Aug. 12, 2015

One was the so- called wave-particle duality of nature at the infinitesimal scale: experiments sometimes showed light and electrons behaving like particles, and other times as waves.

From "Big Science" by Michael Hiltzik

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