Question

what is optical density​

Answer 1

Answer:

Optical density is a term used in the field of optical spectroscopy to describe the propagation of a wave through a material

Answer 2

In optics, absorbance or decadic absorbance is the common logarithm of the ratio of incident to transmitted radiant power through a material, and spectral absorbance or spectral decadic absorbance is the common logarithm of the ratio of incident to transmitted spectral radiant power through a material.