Candela was chosen so that the new definition would precisely match the old definition. Although the candela is now defined in terms of the second (an SI base unit) and the watt (a derived SI unit), the candela remains a base unit of the SI system, by definition. If a source emits a known luminous intensity "I" (in candelas) in a well-defined cone, the total luminous flux "Φ" in lumens is given by where "A" is the "radiation angle" of the lamp—the full vertex angle of the emission cone. For example, a lamp that emits 590 cd with a radiation angle
Estrella Cabeza Candela May 2013. Later that summer, Cabeza Candela played in her first main draw of a Grand Slam at Wimbledon. She lost in the first round to Caroline Wozniacki 6–0, 6–2. In early July, Cabeza Candela reached her farthest result in a WTA tournament by reaching the semifinals of Internazionali Femminili di Palermo losing to the Italian, Roberta Vinci, in three sets. 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