Luminance Luminance Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction. It describes the amount of light that passes through, is emitted or reflected from a particular area, and falls within a given solid angle. The SI unit for luminance is candela per square metre (cd/m). A non-SI term for the same unit is the nit. The CGS unit of luminance is the stilb, which is equal to one candela per square centimetre or 10 kcd/m. Luminance is often used to characterize emission or reflection from flat, diffuse surfaces. The luminance
Maximising measure under "T", i.e., for every Borel-measurable subset "A" of "X", "μ"("T"("A")) = "μ"("A"). (Note that, by the Krylov-Bogolyubov theorem, if "X" is compact and metrizable, Inv("T") is non-empty.) Define, for continuous functions "f" : "X" → R, the maximum integral function "β" by A probability measure "μ" in Inv("T") is said to be a maximising measure for "f" if Maximising measure In mathematics — specifically, in ergodic theory — a maximising measure is a particular kind of probability measure. Informally, a probability measure "μ" is a maximising measure for some function "f" if the integral of "f" with respect to