| http://www.w3.org/ns/prov#value | - Thus, when the optically diffusing, or optically rough, surface 104 is illuminated and scatters light towards a light detecting device, such as a camera, an electronic or digital camera, a CCD array, an array of CMOS light sensitive elements or the like, the scattered light has regions where the optically diffusing, or optically rough, surface 104 causes the diffracted light waves to positively or
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