photometry


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photometry

 [fo-tom´ĕ-tre]
measurement of the intensity of light.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

pho·tom·e·try

(fō-tom'ĕ-trē),
The measurement of the intensity of light.
Farlex Partner Medical Dictionary © Farlex 2012

photometry 

The measurement of light with a photometer. See candela per square metre; luminous flux; footcandle; footlambert; illuminance; luminous intensity; lambert; luminance; millilambert; photometer.
Table P3 Common photometric units
luminous flux
lumens
luminous intensity (I)
candela = lumens/steradian
illuminance (E)
lux = lumens/m2
footcandle = lumens/ft2
luminance (L)
candela/m2
candela/ft2
footlambert
lambert
millilambert
1 footlambert (fL) = 3.426 cd/m2
1 lambert = 3183 cd/m2
1 millilambert = 3.183 cd/m2
1 candela/m2 = 0.2919 fL
1 candela/ft2 = 3.142 fL
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann

pho·tom·e·try

(fō-tom'ĕ-trē)
The measurement of the intensity of light.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
However, a major advantage of the radial velocity method over transit photometry is that a planet need not cross its star from the perspective of an astronomer on Earth.
of serum samples after dilution preparations were subjected to flame photometry tests.
Careful analysis of the Kitt Peak quiescence photometry of NZ Boo showed a feature which we interpreted as the end of the eclipse of the white dwarf.
5 - 8 the stimuli are characterized in terms of photopic photometry. This is the most commonly used form of photometry, but it is worth considering how the modeling results would be different with alternative forms of photometry.
We were performing differential photometry of variable stars with an automated telescope which is now at Fairborn Observatory, Washington Camp, AZ.
Stromgren's scientific contributions can be separated into three main topics: problems of chemical composition of stellar structure and stellar interiors (1930-1940), the physics of interstellar gas (1938-1953), and photoelectric photometry of stellar spectra (from 1948).
Moreover, with advancements in computer software programming, manufacturers began to utilize improved photometry to design field layouts that accurately predicted light levels.
The X-STREAM analyzers offer single- and dual-channel analysis utilizing infrared, ultraviolet and visible photometry, paramagnetic and electrochemical oxygen, and thermal conductivity sensor technologies.
Three of these, gravimetry, fluorometry, and photometry have been used for at least two decades, while ratiometric photometry[TM] is a newer, but still proven technique that combines the advantages of fluorometry and photometry.
In addition Biohit has the opportunity to market, world-wide, the complete analysis system, comprising the Luminex 100 analyser or Biohit's vertical photometry analyser in association with pipettes, diagnostics test kits and software.
CCD visual photometry of SZ Lyn was obtained over 3 week period as a means to test both the observational and analysis capabilities of the 0.35-m Automated Robotic Telescope (ART) at Albertson College, and determine a more accurate period for the light variation.
We observed using the technique of differential photometry in the Stromgren system.