It works this way : light from a xenon arc lamp are shone on the surface, then a light detector " which has dedicated software ) is utilised to measure the specular and diffused reflection.
32.
The visibility of objects, excluding light-emitting ones, is primarily caused by diffuse reflection of light : it is diffusely-scattered light that forms the image of the object in the observer's eye.
33.
Black is black because of a low level of diffuse reflection, not because of a low level of specular reflection-- in other words, it's quite possible to be shiny and still be black.
34.
The shaded front has patches of light red and light green, both surely arising from the diffuse reflection of the trees and the porch roof .-- Talk 20 : 06, 1 July 2010 ( UTC)
35.
Although the ice is clear, scattering of light by the crystal facets and hollows / imperfections mean that the crystals often appear white in color due to diffuse reflection of the whole spectrum of light by the small ice particles.
36.
If instead there was a little diffuse reflection and the rest was absorbed, then you'd probably describe the color as dark gray ( at least if the reflectivity was reasonably wavelength-independent within the visible spectrum ).
37.
This is essentially the same distribution that a path-tracing program would sample in tracing back one diffuse reflection step; or that a bidirectional ray tracing program would sample to achieve one forward diffuse reflection step when light source mapping forwards.
38.
This is essentially the same distribution that a path-tracing program would sample in tracing back one diffuse reflection step; or that a bidirectional ray tracing program would sample to achieve one forward diffuse reflection step when light source mapping forwards.
39.
A surface may also exhibit both specular and diffuse reflection, as is the case, for example, of glossy paints as used in home painting, which give also a fraction of specular reflection, while matte paints give almost exclusively diffuse reflection.
40.
A surface may also exhibit both specular and diffuse reflection, as is the case, for example, of glossy paints as used in home painting, which give also a fraction of specular reflection, while matte paints give almost exclusively diffuse reflection.
