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
How to Measure a Planet? it brought them a whole new fanbase. "How to Measure a Planet?" remains something of a high point for the Gathering, with tracks from the album making up the majority of their two subsequent live albums, "Superheat (album)" (2000) and "Sleepy Buildings" (2004). In Japan, a one-CD version of the album was released, omitting the nearly half-hour title track. Having already achieved some moderate success with "Mandylion" and "Nighttime Birds", the group felt trapped in an artistically controlled corner, which was very limited due to the high expectations from their fan base. Following the departure of guitarist Jelmer Wiersma, the