| http://www.w3.org/ns/prov#value | - While the light rays emanating from the lamps 26 pass downwardly through the prismatic lens 30 and enter the room 2, for purposes of analysis it is more desirable to consider the rays as emanating from the room, or more particularly from the eye of an individual working within the room, and then tracing them backwardly into the lighting fixture 20, if in fact they do enter the interior of the fixt
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