The Greatest Guide To Crystal
The Greatest Guide To Crystal
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诗中“胜美玉”，“过冰清”，写出水晶的质地美，而“亦欲应时明”则描绘出水晶充满灵性的动态美，耐人寻味。罗维是有独特眼光，懂得水晶真谛，第一个称赞水晶超过美玉的伟大诗人。他的认识已被千年之后的科学理论所证实；以水晶为直接吟咏对象的诗篇还有：
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These advancements contain exotic buildings with programmable lattice symmetries and properly-described crystal behavior, responsive products that leverage the intrinsic Homes of nucleic acids to control buildings on demand, nanoparticle superlattices grown epitaxially from surfaces and colloidal crystals which offer insights into light-weight–matter interactions. Hunting ahead, we problem the Group to leverage the amazing structural control afforded by crystal engineering with DNA to synthesize classes of functional elements that drive past what has become probable with naturally taking place crystalline components or These produced by far more conventional procedures.
Fig. three: A library of lattice symmetries is often accessed by shifting the particle core and DNA shell.
C2 [ U ] clear glass of quite good quality, commonly with its surface Slash into fragile styles:
Lattices may have 1 lattice level for every cell or more than one, yielding a total of fourteen Bravais crystal lattice kinds. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the three-dimensional array created by a set of discrete factors.
水晶与高档宝石的净度要求有很大不同。高档宝石稀少罕见，所以一般人们普遍对高档宝石的净度不会过于苛求。而水晶的产量着实大得惊人，所以通常人们会要求水晶净度越高越好，尽量避免有较明显的内含物的水晶。
Crystals is often grown under reasonable ailments from all ninety two naturally taking place components other than helium, and helium is usually crystallized at low temperatures through the use of twenty five atmospheres of stress.
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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天然性是水晶观赏石的基本特性。通常整体造型水晶矿物不饰雕琢就具备很高的观赏价值，但是包裹体水晶观赏石经常需要适当打磨抛光，这样更方便观赏水晶内部的包裹体。
You will find other minerals and molecules which can type these crystal here lattices. Snowflakes absolutely are a vintage example of a roughly symmetric and geometrically patterned composition from ice crystals, and gemstones of all versions are usually crystals.
《古今小说·李公子救蛇获称心》：“器皿皆是玻璃、水晶、琥珀、玛瑙为之，曲尽巧妙，非人间所有。”
对于紫水晶黄水晶这样的单色水晶，通常要观察它的二色性，即使是最顶级的紫水晶黄水晶也是有色差的，通过这个方法可以鉴别是否加色。