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
Félix Candela as much information as he could find. From this, he started questioning the behaviour of reinforced concrete with the elastic assumptions and concluded they are in total disagreement with each other. Candela has said on more than one occasion that the analysis of a structure is a sort of "hobby" to him. Félix Candela worked as an architect upon his arrival in Mexico until 1949 when he started to engineer many concrete structures utilizing his well-known thin-shell design. Candela did most of his work in Mexico throughout the 1950s and into the late 60s. He was responsible for more than