Footcandles (fc) are a unit of measure for measuring the intensity of light. They refer to the amount of visible light that is produced by a single candle, one foot away from the source. Footcandles are essential for calculating the effectiveness and efficiency of lighting systems in commercial, residential, industrial and outdoor settings. Lighting designers typically measure footcandles when planning how much illumination an area needs and what type of luminaires should be used.

Edward Worrell

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Edward Worrell

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