Wave-particle duality
Wave-particle duality
Wave-particle duality (/weɪv ˈpɑːrtɪkəl duːˈælɪti/) is a fundamental concept in quantum mechanics that describes how every particle or quantum entity can be described as both a particle and a wave. It is a key principle of quantum mechanics and an aspect of the behavior of quantum systems.
Etymology
The term "wave-particle duality" is derived from the observation that particles exhibit both wave-like and particle-like properties. The concept was first postulated by Louis de Broglie in 1924.
Explanation
In quantum mechanics, wave-particle duality holds that the properties of particles and waves are not mutually exclusive (as they are in classical physics), but rather exist simultaneously in quantum objects. For example, light can behave as both a wave (it can be diffracted) and a particle (it contains photon particles). Similarly, matter also exhibits this duality; for instance, electrons create interference patterns when passed through a double-slit experiment, a characteristic of waves.
Related Terms
- Quantum mechanics: The branch of physics dealing with the behavior of particles at the atomic and subatomic level.
- Photon: A type of elementary particle, the quantum of the electromagnetic field including electromagnetic radiation such as light.
- Electron: A subatomic particle with a negative electric charge.
- Double-slit experiment: A demonstration that light and matter can display characteristics of both classically defined waves and particles.
See Also
External links
- Medical encyclopedia article on Wave-particle duality
- Wikipedia's article - Wave-particle duality
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