# Fechner's law

> English word · Proper noun

## Definitions
1. The observation that subjective sensation is proportional to the logarithm of the intensity of the stimulus.

## Etymology
Formulated by Gustav Fechner (1801–1887).

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