I need to construct a lamp using some sort of plastic about an inch thick to transfer light from one edge to the other. I need to know which material transmits the most light (least lumin loss) from a source - or which material has the least "resistance", so to speak. I need to put a light bulb near the edge of some sort of plastic, I was thinking either a piece of polyester resin, a urathane, or a polymethyl methacrylate (perspex), and I what I'm asking is which one (or one I haven't mentioned out of ignorance) will deliver the largest percentage of the source light out the opposite edge. Thanks Ken
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