About Crystal
About Crystal
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其它描述：《庶物异名疏》中说： �?水精出大秦国，一名黎�?�?。结晶完整的水晶晶体，就如参差交错的马齿，所以人们又叫它马牙石。先民们最早用它研磨成眼镜片，因而送它一个眼镜石的绰号。水晶有通称，也有俗称。广州一带称水晶叫晶玉，又名鱼脑冻；江苏东海县山民发现水晶会 �?窜火�?�?，于是给它起个放光石的俗名。世间一物多名，不足为奇，而像水晶拥有这么多的别称，实不多见。瞧，从水玉、水碧、白玉、玉瑛、水精石英、黎难、晶玉到菩萨石、马牙石、眼镜石、放光石、千年冰、高山冻、鱼脑冻等等，简直构成一部奇石鉴赏史。
①压电效�?在机械力(压力或拉�?作用下，水晶单晶体的两端会产生电荷，其电量相等但符号相反。在工业上，无色、无缺陷、不具双晶的水晶常被用来作压电石英片。
These advancements include unique buildings with programmable lattice symmetries and effectively-outlined crystal habits, responsive resources that leverage the intrinsic properties of nucleic acids to manipulate structures on desire, nanoparticle superlattices developed epitaxially from surfaces and colloidal crystals that offer insights into light-weight–make any difference interactions. Seeking forward, we challenge the community to leverage the incredible structural Handle afforded by crystal engineering with DNA to synthesize courses of useful resources that push past what has become doable with The natural way developing crystalline materials or Individuals created by more regular tactics.
Big crystals of diamond are important gemstones. The crystal has other exciting Houses; it's got the very best audio velocity of any good and is the greatest conductor of heat. Aside from diamond, one other common type of carbon is graphite, and that is a layered substance. Just about every carbon atom has 3 coplanar near neighbours, forming an arrangement known as the honeycomb lattice. 3-dimensional graphite crystals are attained by stacking equivalent levels.
How Crystals Variety The entire process of forming a crystal is called crystallization. Crystallization normally occurs each time a solid crystal grows from a liquid or Resolution.
发晶，包括钛晶，铜顺发，绿发晶，黑发晶，银发晶，杂色发晶，其中钛晶最珍贵，少数钛晶价值可比钻石，红宝石和蓝宝石以及祖母绿。
Crystals search one of a kind from a number of other rocks and minerals, but �?barring a handful of Particular circumstances �?nearly all minerals cover a crystalline construction beneath the area.
As a warm solution cools or a saturated Remedy evaporates, particles draw near enough for chemical bonds to form. Crystals also can form from deposition straight from the gas stage. Liquid crystals have particles oriented within an structured method, like good crystals, but are able to movement.
24I want to make my meaning crystal obvious.我想把我的意思解释得清清楚楚。《牛津词典》
晶体 Silicon crystals grown inside of a laboratory change light into electrical Electrical power. 在实验室中长成的硅晶体可将光线转变为电能。
The fundamental units of solids are either atoms or atoms which have merged into molecules. The electrons of the atom go in orbits that form a shell construction across the nucleus. The shells are loaded in a systematic order, with Each individual shell accommodating only a small number of electrons. Distinct atoms have distinctive numbers of electrons, which happen to be dispersed inside a attribute electronic framework of stuffed and partially filled shells.
Molecular Crystals: Full molecules are bonded to one another in an arranged manner. An excellent illustration is really a sugar crystal, which has sucrose molecules.
Crystals are labeled normally classes, for example insulators, metals, semiconductors, and molecular solids. An individual crystal of the insulator is often transparent and resembles a bit of glass. Metals are shiny Except if they click here have rusted. Semiconductors are sometimes shiny and in some cases clear but are in no way rusty. Several crystals might be labeled as just one sort of sound, while others have intermediate conduct. Cadmium sulfide (CdS) may be prepared in pure variety and is a superb insulator; when impurities are additional to cadmium sulfide, it results in being a fascinating semiconductor.
水晶的价值根据品质、块体的大小、美感和产量多少的不同相差较大。遇到好的天然水晶要敢于下手，但好的水晶一般大家都想得到，值与不值，就要看经验了。由于天然水晶的开采和制作原因，没有瑕疵的水晶很难得到，纯净的饰品要达到与合成水晶媲美的品质，实在是很难得。另外，由于水晶的特性，在佩戴过程中，也会改变其等级，比如因为某种原因，有可能会逐渐产生较大裂纹。