Crystal Fundamentals Explained
Crystal Fundamentals Explained
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轴性、光性：一轴晶正光性。正交偏光下所看到的一轴晶干涉图是独特的，其黑十字臂未达中心，形成中空的图案，俗称牛眼干涉图。中心部分通常为淡绿色或淡粉色。
the sound condition of many very simple substances, that have a daily condition and surfaces arranged in very similar styles
These developments include things like exotic structures with programmable lattice symmetries and very well-defined crystal patterns, responsive supplies that leverage the intrinsic Homes of nucleic acids to manipulate structures on demand, nanoparticle superlattices grown epitaxially from surfaces and colloidal crystals that supply insights into light-weight–make a difference interactions. Seeking forward, we challenge the Local community to leverage the incredible structural Regulate afforded by crystal engineering with DNA to synthesize courses of purposeful resources that thrust beyond what continues to be probable with The natural way developing crystalline supplies or those produced by additional regular procedures.
水碧：《山海经》中，水晶又被称作水碧： �?又南三百里，日耿山，无草木，多水碧 �?，郭璞注�?�?亦水玉类 ”。这种称谓常被文人所引用，晋代郭景纯《璞江赋》道�?�?鬼，水碧�?�?。水晶又有人称它叫玉瑛。《符瑞图》载�?美石似玉，水精谓之玉瑛也�?”
2She was putting on a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
These check here illustrations are from corpora and from sources online. Any thoughts in the illustrations don't signify the belief of the Cambridge Dictionary editors or of Cambridge University Push or its licensors.
Include to phrase checklist Include to word checklist [ C/U ] transparent rock that looks like ice, or possibly a piece of it
市场上有很多人把熔炼水晶也叫做合成水晶，那是不准确的，一般都是以水晶废料为原料在高温高压下熔炼出来的，而不是结晶成的，不具备水晶的晶体特性，所以不能把熔炼水晶与合成水晶混为一谈；但是熔炼水晶耐高温，用优质二氧化硅熔炼成的熔炼水晶可以做成实用产品比如水晶杯、烤盘、茶具等，实际上一代伟人毛泽东主席的水晶棺就是选用东海优质水晶熔炼而成的。
水晶常以晶簇、晶洞形式产出，其中水晶洞一般存在于由火山喷发而形成的巨厚熔岩流层的火成岩与玄武岩中。火山喷发时所含的气体或热水溶蚀等作用导致岩层中出现大量的孔隙，当富含硅质矿物的流体进入较薄的熔岩孔隙中，且温、压条件合适时将结晶沉淀出水晶等矿物。
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被主体水晶所捕获的包裹体。原生包裹体通常为固相，形态较规则。水晶中典型的原成包裹体有金红石、电气石、黄铁矿等，也会见到岩石碎屑或集合体。
Crystallography could be the research of crystals, and it promotions with all the things from excellent geometric styles to seemingly random conglomerations of particles and minerals.
crystal, any strong materials by which the part atoms are organized within a definite pattern and whose surface area regularity reflects its internal symmetry.
The C60 molecules, also called buckyballs, are rather strong and almost incompressible. Crystals are shaped these which the balls are organized in an fcc lattice by using a one particular-nanometre spacing in between the centres of adjacent balls. The identical C70 molecule has The form of the rugby ball; C70 molecules also sort an fcc crystal when stacked jointly. The stable fullerenes variety molecular crystals, with weak binding—supplied by van der Waals interactions—involving the molecules.