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
Vincent Candela Vincent Candela Vincent Philippe Antoine Candela (; born 24 October 1973) is a former French footballer. With the French national team, Candela won the 1998 FIFA World Cup, as well as UEFA Euro 2000. Candela was a quick, offensive-minded, and technically skilled left wingback, who was effective at joining the attack as well as being capable in defence, due to his intelligence and tenacity. Although he preferred playing on the left flank, he was naturally right-footed, and was also capable of playing on the right, both as a full-back, and as a winger, and was an accurate crosser and set-piece