Lighting Design and Simulation Knowledgebase
(Term of radiometry/photometry)
In reference to viewer and an observed surface, the angle equal and opposite to the viewing angle.
In the case of a specular reflecion on a surface, this means that both incident and the leaving ray have the same absolute (but opposite real) angle to the normal vector of the surface.
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References: |
photometry radiometry specular normal vector |
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| English | German | |
| mirror angle | Der Reflexionswinkel |
