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 ?
5 to 3 foot-candles of light to accurately identify an object.
Although people can discriminate objects and colors under both types of lamps when light levels are abundant, metal halide offers more accurate vision at low light levels, especially below three foot-candles.
Access Fixtures' newest full basketball court lighting system uses metal halide lighting technology to produce an average of 28 foot-candles over the entire court, providing even lighting for all basketball play.
Access Fixtures' newest LED basketball court lights emit an average of 15 foot-candles over the entire court area, providing even, high CRI, white light for basketball games.
Proper merchandise lighting is not a single standard of watts or foot-candles but a mixture of science and art.
Among other requirements, it mandates certain light levels (10 foot-candles at the machine and two foot-candles within 60 feet of the machine).
These regulatory devices ensure ballasts draw power only when it is most efficient to do so, increasing lighting systems' efficiency and providing more foot-candles of light per watt consumed.
The newest LED basketball half court lighting package produces light levels of more than 16 foot-candles across the full playing area while achieving extremely even light levels, a max/min ratio of only 2.
These regulatory devices ensure the ballast draws power only when it is most efficient to do so, increasing the lighting system's efficiency and providing more foot-candles of light per watt consumed.
The newest LED twin tennis court lighting package provides light levels of more than 25 foot-candles across the full playing area of both courts while achieving extremely even light levels, a max/min ratio of only 2.
Photoluminescent signs that have been approved by Underwriters Laboratories offer the potential to save energy in areas where they will be illuminated by least 5 foot-candles of reliable fluorescent lighting.
The new LED twin tennis court lighting package boasts light levels of more than 45 foot-candles in both courts while achieving extremely even light levels, a max/min ratio of only 1.