den·si·tom·e·ter (d n s -t m -t r)n. 1. An apparatus for measuring the optical density of a material, such as a photographic negative. 2. See densimeter. den si·tome·try (--tr ) n. |
densitometer
[den′sitom′ətər]
Etymology: L, densus + Gk, metron, measure
a device that uses a photoelectric cell to detect differences in the intensity of light transmitted through a substance, such as x-ray film.
densitometer (den´sitom´
tur),n an instrument for determining the degree of darkening of developed photographic or radiographic film, based on the use of a photoelectric cell to measure the light transmission through a given area of the film.
densimeter, densitometer
1. an instrument for determining density or specific gravity of a liquid.
2. an instrument used for measuring photographic transmission and/or reflection density.
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