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microdensitometer

Alternative forms: =densitometer, n.

  • In x-ray densitometry, device used for the measurement of optical density of an X-ray film. The film of the radiographed samples rests on a movable table which passes over a light source with a slit-shaped aperture (measuring slit). The light signals of varying intensity are transformed by a potentiometer into electrical impulses. These in turn activate a strip-chart recorder. A magnetic storage unit registers selected values. (≈ Schweingruber 1988)
German: Mikrodensitometer
French: microdensitomètre
Italian: microdensitometro
Spanish: microdensitómetro
Portuguese: microdensitômetro

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