This page is optimized for large screens. Zooming may cause some display problems.
Lambertian light source
: light source with a constant radiance (or luminance) whichever the direction
Radiance ( radiometry )
: for a light source or a diffusing/reflecting surface, power emitted per unit of solid angle and per unit of apparent area
Irradiance ( radiometry )
: optical power received by unit area
: phenomenon by which a radiation is deflected in various directions by interaction with other objects