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What is Candle-Power? How do I convert candle power to watts?

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What is Candle-Power? How do I convert candle power to watts?
posted Apr 30, 2016 by Abhay Dubey

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1 Answer

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Candlepower" is largely an obsolete term. However, it is still sometimes used to describe the luminous intensity of high powered flashlights and spotlights. Narrow-beamed lights of all sorts can have very high candlepower specifications, because candlepower measures the intensity of the light falling on a target, rather than the total amount of light emitted. A given lamp will have a higher candlepower rating if its light is more tightly focused.

you cannot convert candle power into watts unless the manufacturer already has calculated both candlepower and watts, you're pretty much out of luck. Watts and candlepower are two very different measurements.

1 candlepower is equal to about 0.981 candela.
The candela is defined to be the luminous intensity of a light source producing single-frequency light at a frequency of 540 terahertz (THz) with a power of 1/683 watt per steradian, or 18.3988 milli watts over a complete sphere centered at the light source.

answer May 1, 2016 by Amit Kumar Pandey
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