Double-slit experiment

Definition

The double-slit experiment is a classic physics experiment that demonstrates the wave-particle duality of light and matter. It involves shining a beam of particles or waves through two closely spaced slits, resulting in an interference pattern on a screen behind them.

Analogy

Imagine throwing tennis balls at a wall with two small holes close together. When you throw one ball at a time, it passes through both holes and creates an interference pattern on the other side. This shows how particles can behave like waves and interfere with themselves.

Related terms

Diffraction: The bending or spreading out of waves as they encounter obstacles or pass through narrow openings, as observed in the double-slit experiment.

Young's double-slit experiment: A specific version of the double-slit experiment conducted by Thomas Young in 1801 to demonstrate the wave nature of light.

Single-slit diffraction: Similar to the double-slit experiment, but with only one slit, which also produces an interference pattern due to diffraction effects.