foot-candle


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foot-candle

An amount of light equivalent to 1 lumen per square foot.
References in periodicals archive ?
Table I Comparison of measurements of reflective illumination of most common illuminated stand magnifiers (measurements are in foot-candles).
In Facility 2, however, residents were eating at tables with illumination of less than five foot-candles. "This facility had a limited budget for modification, so we replaced the existing fixtures with four-bulb fluorescent standard ceiling fixtures for $50 a piece that we purchased from a home improvement store," she explained.
They find that if one station installs bright lights, competing stations feel obliged to be brighter still, and as a consequence illumination levels of 1,000 lux (100 foot-candles)--more than double that used in many indoor offices--have become common.
Three foot-candles. Once security has decided to use light to secure a property, the company must decide how much light is appropriate.
The unit delivers a lamp color temperature of 3250 [degrees] Kelvin with an output of 350,000 foot-candles. Either 115 VAC or 230 VAC voltage capability at 50 or 60 HZ is available.
"If you over-light something, and people leave your establishment, they have to re-adapt to the one foot-candle of the roadway.
Typically, urban planning goals are to flood areas with as many foot-candles of light as possible.
Department of Agriculture (4) (USDA), every room where utensils for dairy products are produced, packaged or washed must have at least 30 foot-candles of light intensity on all work surfaces.
That's measured in foot-candles (based on English units) or, more commonly these days, the metric unit lux.