optical densimeter

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• Julius Erasmus Hilgard — (January 7, 1825 – May 9, 1890) was a German American engineer.Julius Erasmus Hilgard [ [http://books.google.com/books?id=SddRAAAAMAAJ pg=PA150 Julius Erasmus Hilgard 1825 1890] A History of the First Half century of the National Academy of… …   Wikipedia

• densitometer — 1. An instrument for measuring the density of a fluid. SYN: densimeter. 2. An instrument for measuring, by virtue of relative turbidity, the growth of bacteria in broth; useful in microbiologic assay of nutrients and antibiotics, phage …   Medical dictionary

• densitometer — n. 1. 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}. [WordNet 1.5] 2. same as {densimeter}. [PJC] …   The Collaborative International Dictionary of English

• densitometer — densitometric /den si teuh me trik/, adj. densitometry, n. /den si tom i teuhr/, n. 1. Photog. an instrument for measuring the density of negatives. 2. a densimeter. [1900 05; DENSIT(Y) + O + METER] * * * ▪ instrument       device that measures… …   Universalium

• densitometer — noun a) A device that measures the optical density of a material. b) A device that measures the specific gravity of a substance; a densimeter. See Also: densitometric, densitometry …   Wiktionary

• densitometer — i. An instrument for measuring the density or specific gravity of fuel. Also called a densimeter. ii. An instrument for measuring the optical density (photographic transmission, photographic reflection, visual transmission, etc.) of a material,… …   Aviation dictionary

• densitometer — [den΄sə täm′ət ər] n. [< DENSITY + METER] 1. a device for measuring optical density, as of a photographic negative 2. DENSIMETER …   English World dictionary