Beer-Lambert law


Beer-Lam·​bert law ˈber-ˈläm-ˌbert- How to pronounce Beer-Lambert law (audio)
variants or less commonly Beer-Lambert's law
: beer's law
Absorption spectrophotometry is concerned with the absorption of incident radiation, as a function of wavelength, upon passage through a given medium. Its use in quantitative analysis is founded upon the Beer-Lambert Law which relates the amount of radiation absorbed at a given wave length to the concentration and length of the absorbing path.Tom D. Schlabach, Encyclopedia Of Chemistry, 1966

Word History


after Johann Heinrich Lambert †1777 Swiss-Alsatian mathematician and physicist, whose formulation of light absorption in a dense material is complementary to Beer's law

First Known Use

1908, in the meaning defined above

Time Traveler
The first known use of Beer-Lambert law was in 1908

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Dictionary Entries Near Beer-Lambert law

Cite this Entry

“Beer-Lambert law.” Dictionary, Merriam-Webster, Accessed 18 May. 2024.

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