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Microdensitometers

A microdensitometer is an instrument for the precise measurement of density (transmission) over a small area on a piece of exposed film.

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Interferometric Optics - Jonesborough, TN

Glossary

microdensitometer The fundamental tool of microdensitometry, the microdensitometer is an instrument used for the precise measurement of microscopic optical densities (i.e. optical absorption) by detection of faint spectral lines in transmission over a small area on a...
spectrophotometer A spectrophotometer is a scientific instrument used to measure the intensity of light at various wavelengths in the electromagnetic spectrum, typically in the visible and ultraviolet regions. It is commonly employed in various fields such as...
density
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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