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Illuminance of a 1-candela source measured 1 foot away from the source.
A measure of the intensity of light shining on a surface. (Lux is the equivalent in SI [metric] units; 10.764 lux = 1 footcandle.)
Illuminance on a surface. One lumen per square foot equals a footcandle.
A unit of direct illumination; the amount of light produced by a one-candlepower source on a square foot of surface, every part of which is one foot from the candle. A lumen per square foot.
A footcandle (ftcndl or fc) represents the amount of lumens falling on an area expressed in square feet. One lumen falling on a surface of one square foot produces one footcandle.
The unit used to measure brightness. One footcandle is the amount of illumination falling on a one-square surface from a standard candle located one foot away.
Illuminance produced on a surface one foot from a uniform point source of one candela.
A unit of illumination equal to that on a square foot of surface that is everywhere 1 foot from a uniform 1-candle point source, being equal to 1 lumen/ft squared.
old unit of illuminance. 1fc = 10.764 lux
a unit of illuminance on a surface that is everywhere 1 foot from a point source of 1 candle
a measurement of light that theoretically equals the amount of light received from one candle at a distance of one foot
a measure of the quantity of light (illuminance) which falls on a surface - a measure of the lighting in a room
a unit of luminance
It is the light intensity (illumination) of a surface one foot distant from a source of one candela. It is equal to one lumen per square foot. (1FC = 1 lm ft2). The footcandle is the unit used to measure incident light.
A unit of measurement indicating how much illumination is reaching a surface. It is equal to one lumen striking an area of one square foot.
The density of light striking an object; the result of one lumen striking one square foot; an English system measure of illuminance at a point on a surface, equivalent to about 11 lux. (Lull, 90)
The light intensity of a object one foot away from a one candela source.
See lumen/ft 2.
A measure of light equal to 1 lumen per square foot. One foot-candle = 10.76 lux. The foot-candle is the unit most commonly employed by light meters used in the United States. However, most camera literature specifies the amount of light required for a camera to operate in lux. It is easy to convert camera specifications in lux to the equivalent specification in foot-candles: Divide the specified lux by 10 for equivalent foot-candles.
See lux (lx)
The English unit of measurement of the illuminance (or light level) on a surface. One footcandle is equal to one lumen per square foot.
A measurement of light level. It is equivalent to the light intensity made by one candle at a distance of one foot.
A standard measurement of light intensity, representing the amount of illuminance on a surface one foot square on which there is a uniformly distributed flux of one lumen. More simply, one footcandle of illuminance is equal to the light emitted by one candle at a distance of one foot.
A unit of illuminance or light falling onto a surface. One footcandle is equal to 1 lumen per square foot.
Unit of illuminance. See Lux vs. Footcandle.
A unit of illuminance on a surface that is one foot from a uniform point source of light of one candle and is equal to one lumen per square foot.
The unit to measure how much total light is reaching a surface, such as a wall or table. One lumen falling on one square foot of surface produces illumination of one footcandle.
A measurement of illuminance, or illumination expressed in lumens per square foot. It is the amount of illumination from 1 international candle (the candela) falling on a 1-ft. surface at a distance of 1 foot. In SI units, 1 fc = 10.764 lux (1x). See Burle Electro-Optics Handbook.
The unit of measure for the density of light as it reaches a surface. One footcandle is equal to one lumen per square foot. Measured footcandles are sensitive to the distance from the source to the surface of measure (inverse square law) and the angle at which the light reaches the surface (cosine law).
A measure of light useful in determining intensity of light for growing orchids; the illumination produced by a candle at a distance of one foot. Another unit commonly used is Lumens.
A quantitative unit for measuring luminance.
A unit of measurement of luminescence. For reference: an office desktop typically has 50-75 fc of light falling on it if lit from overhead fluorescent lamps. A primary focal point tree in a residential garden should have about 5 fc average on it