Specific Absorptivity

Definition

Specific absorptivity, also known as molar absorptivity or molar absorption coefficient, is a measure of how strongly a substance absorbs light at a specific wavelength. It is dependent on the concentration of the substance and can be used to calculate absorbance.

Related terms

Path Length:

Path length refers to the distance that light travels through a sample in spectrophotometry. It affects the amount of light absorbed by the sample.

Wavelength:

Wavelength is the distance between two corresponding points on a wave, such as peaks or troughs. Different substances have different absorption characteristics at specific wavelengths.

Lambert's Law: Lambert's Law states that there is a logarithmic relationship between absorbance and concentration when using monochromatic light sources.