# Landauer's principle

> English word · Proper noun

## Definitions
1. The principle that any logically irreversible manipulation of information must entail an increase in the entropy of the information-processing apparatus or its environment.

## Etymology
Named after German-American physicist Rolf Landauer (1927–1999), who proposed it in 1961.

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