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AAT Bioquest

What is absorbance?

Posted April 17, 2020


Answer

Absorbance is the measurement of how much light is absorbed while passing through a medium. The more light that is lost while passing through the medium, the higher the absorbance value of the medium is. Unlike optical density, measuring absorbance does not take the refraction of light into account, only absorption.

Additional resources

Absorption Spectrum Viewer