Weber's law

Weber's law

In psychophysics, a historically important law quantifying the perception of change in a given stimulus. Originated by the German physiologist Ernst Heinrich Weber (1795–1878) in 1834 and elaborated by his student Gustav Theodor Fechner, the law states that the change in a stimulus that will be just noticeable is a constant ratio of the original stimulus. It was later shown not to hold for extremes of stimulation.

Variants of WEBER'S LAW

Weber's law or Weber-Fechner law

This entry comes from Encyclopædia Britannica Concise.
For the full entry on Weber's law, visit

Seen & Heard

What made you look up Weber's law? Please tell us what you were reading, watching or discussing that led you here.

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More