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
The Measure of a Man: A Spiritual Autobiography his upbringing and the invaluable legacy of his parents. Just a few years after his introduction to indoor plumbing and the automobile, Poitier broke racial barrier after racial barrier to launch a pioneering acting career. Committed to the notion that what one does for a living shows who one is, Poitier chose to play forceful and affecting characters who said something positive, useful, and lasting about the human condition. "The true measure of a man is in how he provided for his children" this was one lesson Sidney learnt from his father and held dear to his heart all his