exitance


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exitance

(ˈɛksɪtəns)
n
(General Physics) a measure of the ability of a surface to emit radiation. See luminous exitance, radiant exitance
[C20: from exit + -ance]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
The exitance [GAMMA] with a unit area perpendicular to [??] is achieved by the above integrating equation.
Also note that the number of the standard model particle generations and the amount of spatial dimensions, both follow from the structure of the algebra of split octonions and are connected with the exitance of the three fundamental vector-like elements [J.sub.n].
Cuttle's term to describe this flow of light is "mean room surface exitance" (MRSE).
At each time step, the daylighting module calculated the luminous exitance of the shaded and non-shaded window areas depending on the position of the shading device(s).
Then the model uses the gathered information to generate initial luminance exitance used in a radiosity method, which assumes that all interior surfaces are perfect diffusers, and computes diffuse interreflections.
(2009) Wallwashing as factor for energy efficient lighting design Lighting: Wallwashing, general lighting, accent lighting Cuttle (2010) Concept of mean room surface Theory exitance is based on provision of bright surroundings implying vertical illumination Lighting: Downlighting, wallwashing, uplighting 2 VERTICAL VISUAL TASKS
Since its establishment some 60 years ago, Israel has refused the principle of the exitance of a third party in its conflict with the Palestinian territories.
Exitance is the radiant flux emitted into the entire hemisphere above the radiating surface.
where, [E.sub.p] was the total horizontal illuminance at point 'p' [lx (fc)], [C.sub.pj] is the configuration factor from point 'p' to a surface room 'j', [M.sub.j] is the luminous exitance of surface 'j' after infinite inter-reflections [lm/[m.sup.2](lm/[ft.sup.2])], [C.sub.pls] is the configuration factor from a point to the light shelf and [M.sub.ls] is the light flux transmitted through the shelf per unit area [lm/[m.sup.2] (lm/[ft.sup.2])].
Light flux passing through the incremental area at the exit port constitutes exitance from the area and is then used to calculate luminance and intensity from the exit port, and eventually the illuminance on an area on the work plane in a given room.