1. Loluphi uhlobo lwemathiriyeli yelensi ekhoyo? Izinto zendalo: ilitye lekristale, ubunzima obuphezulu, akulula ukusila, inokuhambisa imisebe ye-ultraviolet, kwaye ine-birefringence. Izinto ezenziweyo: kubandakanya iglasi ye-inorganic, iglasi ye-organic kunye ne-optical resin. Iglasi ye-inorganic: Inyibilikiswa kwi-silica, i-calciu...
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