Absorption coefficient
= Absorption coefficient
{title2=$\alpha_\nu$}
{wiki}
The absorption coefficient is the fractional reduction of beam intensity per unit path length: $dI_\nu/ds=-\alpha_\nu I_\nu$ when emission and scattering are absent.
= Absorption coefficient
{title2=$\alpha_\nu$}
{wiki}
The absorption coefficient is the fractional reduction of beam intensity per unit path length: $dI_\nu/ds=-\alpha_\nu I_\nu$ when emission and scattering are absent.