Dictionary

lambert

noun lam·bert \ˈlam-bərt\

Definition of LAMBERT

:  the centimeter-gram-second unit of brightness equal to the brightness of a perfectly diffusing surface that radiates or reflects one lumen per square centimeter
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Origin of LAMBERT

Johann H. Lambert †1777 German physicist & philosopher
First Known Use: 1915

Lambert

biographical name Lam·bert \ˈlam-bərt\

Definition of LAMBERT

John 1619–1683 Eng. gen.
Medical Dictionary

lambert

noun lam·bert \ˈlam-bərt\

Medical Definition of LAMBERT

:  the centimeter-gram-second unit of brightness equal to the brightness of a perfectly diffusing surface that radiates or reflects one lumen per square centimeter

Biographical Note for LAMBERT

Lam·bert \ˈläm-ˌbert\ , Johann Heinrich (1728–1777), German mathematician, physicist, and philosopher. Largely self-educated, Lambert investigated geometry and astronomy, doing so by means of instruments which he himself designed and built. He also made significant contributions to the knowledge of heat and light. In 1760 he demonstrated for the first time how to measure quantitatively the intensity of light. The cgs unit of measurement for light intensity, the lambert, is named in his honor.

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