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| Candlepower | |
|---|---|
 The candlepower was based on the light emitted from a candle | |
| General information | |
| Unit system | international standard (obsolete) |
| Unit of | Luminous intensity |
| Symbol | cp |
| Conversions | |
| 1 cp in ... | ... is equal to ... |
| SI units | 1 candela (modern definition) |
Candlepower (abbreviated as cp or CP) is a unit of measurement for luminous intensity. It expresses levels of light intensity relative to the light emitted by a candle of specific size and constituents. The historical candlepower is equal to 0.981 candelas. In modern usage, candlepower is sometimes used as a synonym for candla.[1]