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
Candela Ferro in 2006, from Mexico in 2007, from Vietnam in 2008 and from Bahamas in 2009. In 2002, Candela presented the INTE Awards (Spanish Television Industry Awards) in Miami, the Golden Globe Awards in Spanish and the Red Carpet pre-show to the Tribute to Celia Cruz. In 2003, she was nominated as Best Female Presenter of the Year in the INTE Awards. In 2004, she hosted the Hispanic Heritage Awards and has been the host of Premio de la Gente in Los Angeles three times. In 2005 she hosted the live special of the Wedding of Charles and Camilla for E!