Physics
Wave-Particle Duality
Quick fact
Light behaves as both a wave and a particle depending on how it is observed, a phenomenon known as wave-particle duality.
Why this is interesting
Have you ever wondered why light can act like a wave in one situation and like a particle in another? This mystery lies at the heart of modern physics.
Read the full explanation
Understanding Wave-Particle Duality
Wave-particle duality means that all particles, including light, can exhibit properties of both waves and particles. For example, light shows interference patterns (a wave property) but also behaves like tiny packets of energy called photons (a particle property). This challenges our classical understanding of what a 'particle' or 'wave' is.
A deeper explanation
In quantum mechanics, objects such as electrons and photons are described by wavefunctions that represent the probability of finding them in certain positions. When observed, these entities behave like particles, but when not observed, they exhibit wave-like behavior—such as interference. This duality highlights the limitations of classical physics and reveals a more complex, probabilistic nature of reality at the quantum level.