The foot-candle is defined as the illuminance of the inside surface of a one-foot-radius sphere with a point source of one candela at its center. Alternatively, it can be defined as the illuminance of one lumen on a one- square foot surface with a uniform distribution.

2019年12月9日 · What is a “foot candle”? A foot-candle (or foot-candle, fc, lm/ft2, or ft-c) is a measurement of light intensity. One foot-candle is defined as enough light to saturate a one-foot square with one lumen of light. But what does that mean, exactly?

Footcandles are the most common unit of measure used by lighting professionals to calculate light levels in businesses and outdoor spaces. A footcandle is de ned as the illuminance on a one square foot surface from a uniform source of light.

2022年9月16日 · One foot candle is defined as the illumination on a one-square-foot surface from a consistent light source. One foot candle is enough light to saturate a one-foot square with one lumen of light. Foot candles are the most common unit of light measure that lighting professionals use to calculate light levels in businesses and outdoor spaces.

2021年3月28日 · What is a foot candle of light? A foot candle is a term used to measure the amount of light that falls on a surface that is 1 foot away from a singular candle. The term “foot candle,” sometimes abbreviated as FC, originated from a time when candles were the main light source available.

2024年3月15日 · In a nutshell, a foot candle is a measurement of light intensity and is defined as the illuminance on a one-square foot surface from a uniform source of light. How many foot candles are recommended for your location?

A foot-candle measures the amount of light that reaches a one-foot square with one lumen of light. 1 footcandle is equal to the amount of light produced by 1 candle (which is 1 lumen) / 1 ft square. 1 fcd = 1 lm/ft². 1 footcandle is the imperial unit of illuminance measurement equivalent to 10.76 lux, the metric unit of illuminance measurement.

2020年11月23日 · A foot-candle measures light intensity, equivalent to one lumen of light per square foot. It measures the light that reaches a surface, while lumens measure the quantity of light produced by a fixture.

2024年12月23日 · A foot-candle (fc) is a unit of measurement that indicates how much light falls on a one-square-foot surface from a uniform light source. It is commonly used in lighting design to measure the brightness or illuminance of a space.

2023年11月16日 · What is a foot candle? Discover why foot candles are the key to perfect lighting. Explore their history, measure them accurately, and transform your spaces with optimal illumination.