![]() ![]() Spermaceti is a material from the heads of sperm whales, and was once used to make high-quality candles.Īt the time the UK established candlepower as a unit, the French standard of light was based on the illumination from a Carcel burner. The term candlepower was originally defined in the United Kingdom, by the Metropolitan Gas Act 1860, as the light produced by a pure spermaceti candle that weighs 1⁄ 6 pound (76 grams) and burns at a rate of 120 grains per hour (7.8 grams per hour). In modern usage, candlepower is sometimes used as a synonym for candela. The historical candlepower is equal to 0.981 candelas. It expresses levels of light intensity relative to the light emitted by a candle of specific size and constituents. The candlepower was based on the light emitted from a candleĬandlepower (abbreviated as cp or CP) is a unit of measurement for luminous intensity. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |