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
Measure space This includes Another class of measure spaces are the complete measure spaces. Measure space A measure space is a basic object of measure theory, a branch of mathematics that studies generalized notions of volumes. Measure spaces contain information about the underlying set, the subsets of said set that are feasible for measuring (the formula_1-algebra) and the method that is used for measuring (the measure). One important example of a measure space is a probability space. Measure space should not be confused with the related measurable spaces. A measure space is a triple formula_2 , where Set The formula_10-algebra on finite