Crystal for Dummies
Crystal for Dummies
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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：
杂质、裂纹越少越好。质地好的水晶制品，应看不到星点状、云雾状和絮状分布的气液包裹体或组成玉石的颗粒。有裂纹、斑点，则属于次品。
结晶的形状非常细小，需要用显微镜才能看得清楚，外观上看起来是平滑、块状。常见最多的是各式玛瑙
养殖晶：养殖晶是指，用天然水晶做种子，然后赋予天然水晶生长的高压条件，养殖器中有富含二氧化硅的分子。然后二氧化硅分子围绕天然水晶种生长，这样的水晶成分（分子式）与天然水晶是一摸一样的，唯一有差别的是，这样的水晶磁场作用没有天然水晶强。
C2 [ U ] clear glass of really high quality, commonly with its surface Minimize into fragile patterns:
无色水晶与无色长石因折射率和密度十分接近故较难区分。主要方法是放大检查。长石有两组极完全解理，显微镜下可见两组解理相交而成的“娱蛤状”包裹体或细直的纹理，而水晶则无解理发育，仅有时可见断续不规则的裂理。
石英：《广雅》称水晶叫石英，色白如莹者又叫白。为附的异形字。司马相如《子虚赋》就�?�?雌黄�?�?之句。苏林解释：�?�?，白石英�?”。
损伤是指水晶由于加工或不小心摔掉、碰撞等原因，人为造成的损坏。它可以是破口，也可以是凹坑等。
Among the binary crystals, the simplest constructions to visualize are All those with equal numbers of the two different types of atoms. The framework of sodium chloride relies with a cube. To build the lattice, the sodium and chlorine atoms are put on alternate corners of a dice, as well as the construction is repeated (Determine 3B).
多色�?无色水晶没有多色性。有色水晶有弱到强的多色�?表现为体色的不同深浅。
There's two these types of attainable periodic preparations. In Every, the initial layer has the atoms packed into a aircraft-triangular lattice in which each and every atom has six immediate neighbours. Figure 2 displays this arrangement to the atoms labeled A
Molecular Crystals: Whole molecules are bonded to each other within an arranged fashion. An excellent instance is actually a sugar crystal, which contains sucrose molecules.
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crystal Alteration is variable: absent in many crystals, in Other people developing dense sericite aggregates which can clearly show some recrystallization consequences to generate coarser-grained white mica. In the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are occasionally arranged in aggregates. In the Cambridge English Corpus Also, haloarchaeal cells have been embedded within just salt crystals beneath laboratory circumstances and subsequently analysed by mild microscopy. Through the Cambridge English Corpus The white clouds (typically sparse) ended up also broadly thought to be remaining composed of tiny crystals of water ice, somewhat like cirrus inside our environment. From the Cambridge English Corpus They can be found in evaporite salt lakes and can be trapped in salt crystals through evaporation. Within the Cambridge English Corpus Hence, the cells (organelles and membranes) get more info are wrecked mechanically by ice crystals, bringing about Dying through cell lysis. In the Cambridge English Corpus The crystals had been Utilized in the main or second orders of reflection. In the Cambridge English Corpus In our 8xperiments, the crystals were cubes having a foundation location of eight e mm. With the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : outcome of temperature and tension.