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A measuring instrument for determining optical or photographic density
Answer for the clue "A measuring instrument for determining optical or photographic density ", 12 letters:
densitometer
Alternative clues for the word densitometer
Word definitions for densitometer in dictionaries
WordNet
Word definitions in WordNet
n. a measuring instrument for determining optical or photographic density a measuring instrument for determining density or specific gravity [syn: densimeter ]
Wiktionary
Word definitions in Wiktionary
n. 1 A device that measures the optical density of a material. 2 A device that measures the specific gravity of a substance; a densimeter.
Wikipedia
Word definitions in Wikipedia
Not to be confused with hydrometer which measures mass density of liquids. A densitometer is a device that measures the degree of darkness (the optical density ) of a photographic or semitransparent material or of a reflecting surface. The densitometer ...
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
densitometer \densitometer\ n. an instrument for determining optical or photographic density. A variety capable of measuring optical density of a sample at a number of different wavelengths, is called a spectrophotometer . same as densimeter .
Usage examples of densitometer.
He would have a densitometer, as it was known, to measure the visibility of a ground flare.
In making all of these sightings, for the use of the camera, the densitometer, or whatever, he would be using an entirely new manual control apparatus.
He was swinging the capsule this way and that way, taking photographs a mile a minute, making detailed observations of the sunrises and horizon, releasing balloons, tending his bottles, taking readings with the densitometer, having a grand time.
He reached for the densitometer, and his hand hit the hatch of the capsule, and a cloud of John Glenn's "fireflies" appeared outside the window.
No more densitometers and varicolored balloons and other White Smock accessories.
Voit's probes found no openings, nor did his densitometer readings show any significant spaces behind.