photometry

[foh-tom-i-tree]

noun

the measurement of the intensity of light or of relative illuminating power.
the science dealing with such measurements.

Origin of photometry

From the New Latin word photometria, dating back to 1815–25. See photo-, -metry

Related formspho·to·met·ric

[foh-tuh-me-trik] /ˌfoʊ təˈmɛ trɪk/, pho·to·met·ri·cal, adjectivepho·tom·e·trist, pho·to·me·tri·cian

[foh-tuh-me-trish-uh n] /ˌfoʊ tə mɛˈtrɪʃ ən/, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for photometry

Historical Examples of photometry

Celestial photography, photometry and spectroscopy sum up its fields of activity.
The Popular Science Monthly, July, 1900
Various
This arrangement leaves untouched the old difficulty in photometry, that arising from the different colors of different lights.
Scientific American Supplement, No. 492, June 6, 1885
Various
An important matter in connexion with glow lamps is their photometry.
Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 6
Various
Considerations drawn from photometry were also lost sight of, because that art was still undeveloped.
The Popular Science Monthly, October, 1900
Various
Its precedence over its rivals Vega and Capella, long in dispute, has been settled by the Harvard photometry.
Pleasures of the telescope
Garrett Serviss

British Dictionary definitions for photometry

photometry

noun

the measurement of the intensity of light
the branch of physics concerned with such measurements

Derived Formsphotometric (ˌfəʊtəˈmɛtrɪk), adjectivephotometrically, adverbphotometrist, noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

photometry in Science

photometry

[fō-tŏm′ĭ-trē]

The measurement of the intensity, brightness, or other properties of light. Also called photometrics See also luminous intensity.