What do you mean by optical density?
Asked by | 14th Sep, 2008, 01:10: PM
In optics, density is a unitless measure of the transmittance of an optical element for a given length at a given wavelength λ:
O = the per-unit opacity T = the per-unit transmittance I0 = the intensity of the incident light beam I = the intensity of the transmitted light beam
The higher the optical density, the lower the transmittance.
Answered by | 15th Sep, 2008, 07:32: AM
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