Lighting a particular area, and falls within a given solid angle. The SI unit for luminance is candela per square metre (cd/m). The CGS unit of luminance is the stilb, which is equal to one candela per square centimetre or 10 kcd/m. The amount of useful light emitted from a source or the luminous flux is measured in lumen (lm). The SI unit of illuminance and luminous emittance, being the luminous power per area, is measured in Lux. It is used in photometry as a measure of the intensity, as perceived by the human eye, of light that hits or passes
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