How Light Affects the Colors of Objects

Released on: August 6, 2008, 1:45 pm

Press Release Author: Nir Mizrachi

Industry: Electronics

Press Release Summary: Color rendering index (CRI) is a system derived from visual
experiments.

Press Release Body: Color rendering index (CRI) is a system derived from visual
experiments. It assesses the impact of different light sources on the perceived
color of objects and surfaces. The first step is to determine the color temperature
of the light source being rated. Next, each of eight standard color samples is
illuminated-first by a light source and then by a light from a blackbody matched to
the same color temperature. If none of the samples changes in color appearance, the
light source is given a CRI rating of 100. Any changes in color appearance which do
occur result in a lower rating. The CRI decreases as the average change in color
appearance of the eight samples increases. Any CRI rating of 80 or above is normally
considered high and indicates that the source has good color properties.




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Web Site: http://www.MR16USA.com

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