# Candela

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## Revision as of 18:50, 16 July 2010

• Candela The unit of measure for the intensity of light at the source roughly equal to the amount of light in any direction from the flame of a candle.

Candela is the SI base unit of luminous intensity; that is, power emitted by a light source in a particular direction, weighted by the luminosity function (a standardized model of the sensitivity of the human eye to different wavelengths, also known as the luminous efficiency function). A common candle emits light with a luminous intensity of roughly one candela. If emission in some directions is blocked by an opaque barrier, the emission would still be approximately one candela in the directions that are not obscured.

## Reference

• Wikipedia Reference see Candela [1]