Worlds of David Darling
Encyclopedia of Science
Home > Encyclopedia of Science

Archimedes' principle

Archimedes' principle
Archimedes' principle
Credit: Bradley W. Carroll, Weber State University

Archimedes' principle states that the apparent loss in weight of a body that is totally or partially immersed in a liquid is equal to the weight of the liquid displaced.

Archimedes supposedly formulated this principle after stepping into a bath and watching it overflow. According to legend, he became so excited that he ran out into the street naked shouting "Eureka! Eureka" ("I've found it! I've found it!").

See also buoyancy and flotation.

Related category