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CR-39 material |
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CR-39 material Allyl diglycol carbonate or Columbia Resin. CR-39 is a light transparent plastic material (refractive index 1.498, V = 59) used in the manufacture of spectacle lenses and much harder than polymethyl methacrylate. It is not quite as hard as glass. Syn. hard resin. See constringence; plastic lens. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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CR-39 material |
CQUN CQUNI CQUSA CQV CQVB CQVK CQW CQWI CQWP CQWR CQZ Cr Cr Cr Cr Cr Cr CR Darwin CR law CR ratio CR Semiconductor Wafers Chips Ltd. CR&D CR&DO CR&EI CR&F CR&R CR&T CR+ CR- CR-39 material CR-ACR-CCIS CR-EAE CR-IPT CR-LDP CR-LSP CR-R CR-S CR-UAV CR-V CR-Z cr. Cr.FA CR/DF CR/DIR CR/DM CR/DR CR/LF CR/LF CR/NED CR/PM CR/XL CR0 Cr1 CR1/2 | |||||
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