# Unruh effect

> English word · Noun

## Definitions
1. A theoretical prediction in quantum field theory that an observer who is uniformly accelerating through empty space will perceive a thermal bath.

## Etymology
Named after W. G. Unruh who described the effect in 1976.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/unruh-effect