Densitometers

A densitometer is a device used to measure the optical density of a material.

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Glossary

densitometer 1. An instrument used to measure the opacity or density of dyes, pigments or dispersed particles that form an image in or on a medium, such as a photographic film. 2. A device used to measure the optical density of a material.
optical density A measure of the transmittance through an optical medium. Optical density equals the log to the base 10 of the reciprocal of the transmittance. where τλ is transmittance. In spectroscopy, optical density is the measure of absorbance, and...

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