What is CP?
CP refers to CANDLEPOWER.
In order to compare intensities of light from different sources some standard is necessary.
The first of these standards of light consisted of a spermaceti candle of standard dimensions burning at a certain rate, giving off light in one direction.
This was known as a standard candle, and it's light from any one direction was said to have an intensity of one candlepower.
This is also know as one candela.
A candle emits one candlepower.
A 16 candlepower light bulb emits an intensity of light equal to sixteen standard candles.
A 100 watt common incandescent bulb emits about 120 candlepower.
Nowadays, published candlepower ratings for miniature lamps are generally in Mean spherical candlepower (MSCP) unless otherwise stated, which is the total light emitted by a candle from all directions.
MSCP rating is generally used on small and miniature bulbs of low output.
Higher output bulbs are generally rated in lumens.
references for this page: CANDLEPOWER, CP, CANDELA, CANDELAS, CANDLE POWER
references to this page: BEAM ANGLE, BEAM SPREAD, CENTER BEAM CANDLEPOWER, CHARACTERISTIC CURVES, COLOR RENDERING INDEX, COLOR TEMPERATURE, CONVERSION TABLE, HORIZONTAL DISTRIBUTION, LUMEN, LUMINANCE, MEAN SPHERICAL CANDLEPOWER, PHOTOMETER, PHOTOPIC VISION, SCOTOPIC VISION