\(\alpha(\lambda) = \frac{1}{\Phi_\lambda(\lambda)}\frac{d\Phi_\lambda(\lambda)}{dl}\), where \(\frac{d\Phi}{\Phi}\) is the relative decrease, caused by absorption, in the spectral radiant flux \(\Phi\) of a collimated beam of electromagnetic radiation corresponding to the wavelength \(\lambda\) during traversal of an infinitesimal layer of a medium and \(dl\) is the length traversed.
n3:latexSymbol
\(\mu\)
n3:plainTextDescription
The Linear Absorption Coefficient is a quantity that characterizes how easily a material or medium can be penetrated by a beam of light, sound, particles, or other energy or matter.