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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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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 An instrument for measuring spectral transmittance or reflectance.
- density (D)
- 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 tl is transmittance. In spectroscopy, optical density is the measure of absorbance, and is...
microdensitometersdensity measurementoptical densitymeasures photographic densitysurfacestellar photometrydensitometerdetects measures spectral linesspectrophotonmetrytest & measurement