Candela frequency and that has a radiant intensity in that direction of watt per steradian. The definition describes how to produce a light source that (by definition) emits one candela, but does not specify the luminosity function for weighting radiation at other frequencies. Such a source could then be used to calibrate instruments designed to measure luminous intensity with reference to a specified luminosity function. An appendix to the SI Brochure makes it clear that the luminosity function is not uniquely specified, but must be selected to fully define the candela. The candela is sometimes still called by the old name
Candela Corp Candela Corp Candela Laser Corporation is an American laser company that develops and sells medical lasers for cosmetic use located in Wayland, Massachusetts. Candela Laser Corporation was founded in 1970. Candela has begun to extend its technology to treat a wider range of cosmetic conditions including the treatment of acne and acne scars, minor wrinkles, and even hair removal. This effort is part of a broader campaign to capture a larger market share of the growing cosmetic surgery industry in the United States and abroad. The company has made an effort to promote laser treatment as a safe and easy