| http://www.w3.org/ns/prov#value | - The body 14 can be made of many different materials capable of transmitting light, but is preferably made of a transparent material, including but not limited to glass, silicone, acrylic, cyclic olefin copolymer (COC), polymethylmethacrylate (PMMA), polycarbonate (PC), PC/PMMA, and polyetherimide (PEI).
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