About Crystal
About 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 developments contain unique buildings with programmable lattice symmetries and very well-defined crystal routines, responsive materials that leverage the intrinsic Houses of nucleic acids to govern buildings on need, nanoparticle superlattices developed epitaxially from surfaces and colloidal crystals which provide insights into light–issue interactions. Seeking ahead, we challenge the Neighborhood to leverage the remarkable structural Command afforded by crystal engineering with DNA to synthesize courses of practical resources that force beyond what has become attainable with naturally happening crystalline elements or All those made by more common procedures.
Fig. seven: A template-directed method can Management The location of creating blocks with a floor inside the formation of intricate buildings.
Crystalline construction is characterised by a geometric, repeating sample of symmetric molecular construction. The arrangement of atoms types these purchased, repeating patterns.
你们都知道，拿起一个水晶棱镜，让一束阳光通过它，就会得到一个光谱，看起来就像一条连续的彩虹色带。
水晶的评价标准和高端宝石有所不同。多数高端宝石把颜色放在评价的第一位，而对水晶来说，颜色和净度（水晶行业称作晶体）是近乎同等重要的因素：
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。
Numerous crystals behave like butter in that click here they are difficult at reduced temperatures but comfortable at larger temperatures. These are named solids in the least temperatures beneath their melting place. A feasible definition of the stable is an item that retains its condition if left undisturbed. The pertinent issue is how much time the thing retains its form. A very viscous fluid retains its shape for one hour but not a 12 months. A sound should retain its shape longer than that.
看文化：水晶里面的包裹体象形，能与文化、宗教及历史有所牵连的话，价格往往会比水晶本身的价值高出几倍甚至几百倍。
地质学家目前为止对晶洞形成还没有广泛认同的理论，但相信晶洞可以在任何埋藏的空腔内形成。这些空腔可以是火成岩中的气泡、树根下的空穴，甚至动物挖的地洞。经过漫长时间，空腔的外壁变硬，溶解的矽酸盐或方解石沉积到内壁。再经过漫长的时间，缓慢渗入的矿物使得晶体在空腔内部结晶。
Crystals are not just renowned for his or her physical physical appearance, but various crystals of different resources and formations can result in an enormous assortment of employs and physical Qualities.
Crystals are labeled in general classes, for instance insulators, metals, semiconductors, and molecular solids. A single crystal of an insulator is often transparent and resembles a bit of glass. Metals are shiny Except they've rusted. Semiconductors are sometimes shiny and from time to time transparent but are never ever rusty. A lot of crystals is usually categorised as only one sort of stable, while others have intermediate behaviour. Cadmium sulfide (CdS) can be well prepared in pure kind and is an excellent insulator; when impurities are added to cadmium sulfide, it turns into a fascinating semiconductor.
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