Glossary
- crystal A solid with a structure that exhibits a basically symmetrical and geometrical arrangement. A crystal may already possess this structure, or it may acquire it through mechanical means. More than 50 chemical substances are important to the optical...
diamond crystalstransparent crystal of tetrahedrally bonded carbon atomshigh hardness and thermal conductivitylipophilic and hydrophobicinsulatorshigh optical dispersiongemstonematerialsoptics