Beer-Lambert Law for Atmospheric Absorption

Output: Press calculate

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Formula:A = εlc

Introduction to the Beer-Lambert Law Calculator

The Beer-Lambert law describes the linear relationship between absorbance and concentration of an absorbing species. In this formula, A is the absorbance, ε (epsilon) is the molar absorptivity, l is the path length of the light through the material, and c is the concentration of the absorbing species.

Parameter usage:

Example valid values:


Data Validation

The molar absorptivity must be greater than zero, the path length must be greater than zero, and the concentration must not be negative.


This calculator takes into account the molar absorptivity, path length, and concentration to calculate the absorbance of light by a species in solution. It is commonly used to determine the concentration of an unknown sample if the molar absorptivity is known.

Tags: Beer Lambert Law, Absorption, Meteorology, Atmospheric Science, Optical Density