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
Estrella Cabeza Candela Estrella Cabeza Candela Estrella Cabeza Candela (; born 20 February 1987) is a Spanish professional tennis player. Cabeza Candela has won 11 singles and 13 doubles titles on the ITF circuit in her career. On 13 May 2013, she reached her best singles ranking of world number 95. On 2 April 2012, she peaked at world number 176 in the doubles rankings. Her best result in a WTA tournament is semifinals, reached in Hobart 2014. Cabeza Candela was born in Los Palacios y Villafranca. Coached by Gonzalo Lopez and Martin Vilar. Parents are Manuel Cabeza (tennis coach) and Estrella Candela;