foot-candle


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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.

References in periodicals archive ?
The advantage increases as illuminance drops from ten foot-candles.
A fluorescent light, for example, casts as much as 900 foot-candles of light, but that's only within 6 inches of the light bulb.
The existing lamps provided only 25 foot-candles on the floor.
25 foot-candles, 10 of the 12 cadets identified the handgun correctly, but 2 cadets still incorrectly identified it or stated they could not identify the object.
Earth Fare keeps the ambient lighting in the store down to about 30 foot-candles but has anywhere from 110 to 150 foot-candles on the product displays.
Gone is the hospital-style emphasis on the head wall and--depending on state regulations--the linear fluorescent light behind the bed, replaced by a minimum of 20 foot-candles of ambient light throughout the room.
The white light output, when used with the CERMAX300 lightsource, is 9,290 foot-candles, or 100,000 lux of high-intensity, brilliant, and uniform illumination for all applications.
The LED engine is designed to maximize light output on the ground or other surfaces with exact center beam candle power (CBCP), providing the right number of foot-candles for exterior lighting applications.
In fact, manufacturers and utility companies figured prominently in the IES membership rolls and committees, fostering recommended light levels in access of 100 foot-candles.
The Illuminating Engineering Society (IES) used to say you needed 'X' foot-candles.
Measuring more than 1,000 foot-candles, the Optima 1000 LED is brighter than many backlit fluorescent light boxes while providing the benefits of LED technology: lower power consumption, longer lifespan and fewer failure points.
Joining lighting packages to light full courts and half courts, this full court basketball lighting package produces light levels of more than 28 foot-candles across the full playing area while achieving extremely even light levels, a max/min ration of only 3.