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 2000, Candela’s life took a spectacular turn for the best, when she was approached by Telemundo to work as a writer, producer and presenter for the network. Since joining Telemundo, now part of the NBC family, Candela has had the honor of hosting the Latin Billboard Music Awards in 2001, 2004, 2005 and 2006, an event that is watched by millions of viewers throughout the world. She hosted for 4 consecutive years the Macy's Thanksgiving Day Parade for Telemundo (simulcast by NBC) and the Miss Universe Pageant from Panama in 2003, from Ecuador in 2004, Thailand in 2005, Los Angeles