foot-candle

(redirected from photometry)
Also found in: Dictionary, Thesaurus, Medical, Encyclopedia, Wikipedia.

foot-candle

A measure of light intensity. One foot-candle is the illumination measured on a surface one foot from the source of one candle. Many worker-safety regulations specify the minimum foot-candles of light required in work areas.Zoning variances for commercial properties near residential areas might place a restriction on the maximum foot-candles of lighting after a certain hour at night.

The Complete Real Estate Encyclopedia by Denise L. Evans, JD & O. William Evans, JD. Copyright © 2007 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
As is the case for transit photometry, if this wobble occurs regularly, then we might reasonably conclude that the gravitational tug of an orbiting planet is responsible.
The most frequently used methods to measure [Na.sub.+] and [K.sub.+] in the clinical laboratory is emission photometry and ion-specific potentiometer electrodes (Henry, 1991).
By measuring eclipse times and supplementing these with photometry obtained with the 1.3m MDM telescope on Kitt Peak some years before when the system was quiescent by our co-workers, Prof Joe Patterson and Jonathan Kemp of the Center for Backyard Astrophysics, we determined [P.sub.orb] as 84.8min.
Therefore, at least at this range of detection distance, the data indicate that the effect of color on detection distance is such that a red veiling stimulus must be 1.6 times more luminous (in terms of photopic photometry) than a blue veiling stimulus.
Further, I obtained access to the photometry of all of the stars observed by Hipparcos [2].
Rennie said: "The botanical photometry system is used in the orange production industry in Florida to pick up on the early warning signs of stressed trees.
Photometry and measuring of focus once performed by conventional mirror boxes now are carried out by reading information picked up the imaging sensor directly.
It was only later that the company introduced its first product utilizing its signature technology, ratiometric photometry. The Pipette Calibration System employs ratiometric photometry, which is based on taking absorbance ratio readings from two standardized dyes at the same time, to verify the volume dispensed from handheld pipettes and automated pipette systems.
There are several methods of glucose measurement sensing: infrared spectroscopy, reflectance photometry, and amperometry.
Poor Tara Fitzgerald, who plays the white-coated Dr Eve Lockhart, gets the worst of it, with "a microspectra photometry and chromatography test" all in one sentence.
Topics covered include light and color, vision and perception, fixtures and photometry and LEED Design and economics.
A run time self-tuning function increases reading performance with a built-in photometry calculation.