Lambert Beer Law Definition

Lambert Beer Law Definition. Other names for beer s law. The beer lambert law relates the attenuation of light to the properties of the material through which the light is traveling. In 1729 pierre bouger discovered the law and published it in essai d optique sur la gradation de la lumiere.

Later in 1760 johann heinrich lambert quoted bouger s discovery saying that the absorbance of a sample is directly proportional to the path length of light. That is a εbc where a is the absorbance ε is the molar extinction coefficient b is the thickness of the solution and c is the. Formulated by german mathematician and chemist august beer in 1852 it states that the absorptive capacity of a dissolved substance is directly proportional to its concentration in a solution. The law is commonly applied to chemical analysis measurements and used in understanding attenuation in physical optics for photons neutrons or rarefied gases.

Beer s law is also known as the beer lambert law the lambert beer law and the beer lambert bouguer law the reason there are so many names is because more than one law is involved.

Formulated by german mathematician and chemist august beer in 1852 it states that the absorptive capacity of a dissolved substance is directly proportional to its concentration in a solution. Definition noun the principal law in spectrometry in which it states that the absorbance at a given wavelength of light is proportional to the molar extinction coefficient the concentration of absorbers in the sample of the molar solution and the length of the light path supplement according to the beer lambert law the absorbance at a given wavelength of light a is proportional to the. This page takes a brief look at the beer lambert law and explains the use of the terms absorbance and molar absorptivity relating to uv visible absorption spectrometry. The beer lambert law also known as beer s law the lambert beer law or the beer lambert bouguer law relates the attenuation of light to the properties of the material through which the light is travelling. Basically pierre bouger discovered the law in 1729 and published it in essai d optique sur la gradation de la lumière johann lambert quoted bouger s discovery in his photometria.