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 Candela Ferro Candela Ferro (born November 13, 1973 in Reconquista, Argentina) is an Argentine journalist, model, and current host of Telemundo's "Al Rojo Vivo: Fin de Semana con Candela Ferro" and the E! Latin show "Mil Preguntas, Una Estrella con Candela Ferro" (1,000 Questions, 1 Star). At an early age she realized she loved entertaining people, she would mimic Libertad Lamarque, a famous Argentine tango vocalist, and she would passionately recite poems by García Lorca, her favorite writer and one of the most influential Spanish writers of all time. She studied Communications at the University of Buenos Aires, thinking that