The Basic Principles Of Crystal
The Basic Principles Of 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。
A basic notion in crystal constructions is definitely the unit cell. It is the smallest unit of quantity which allows equivalent cells to become organized collectively to occupy all offered space. The geometrical basis of all crystals would be the lattice. A lattice is usually seen as a daily and infinite arrangement of factors or atoms, in which Every point or atom has An analogous bordering environment.
These improvements involve exotic buildings with programmable lattice symmetries and nicely-defined crystal routines, responsive supplies that leverage the intrinsic Homes of nucleic acids to govern structures on desire, nanoparticle superlattices grown epitaxially from surfaces and colloidal crystals that supply insights into light-weight–matter interactions. Seeking ahead, we problem the Group to leverage the incredible structural Manage afforded by crystal engineering with DNA to synthesize courses of practical resources that push beyond what has become achievable with Obviously occurring crystalline supplies or those produced by much more typical tactics.
Most solid elements found in mother nature exist in polycrystalline sort in lieu of as an individual crystal. They are actually made up of numerous grains (small crystals) packed with each other to fill all House. Every single specific grain has another orientation than its neighbours. Even though very long-array buy exists within one particular grain, at the boundary amongst grains, the ordering improvements path. An average piece of iron or copper (Cu) is polycrystalline.
Crystalline framework is characterized by a geometrical, repeating sample of symmetric molecular structure. The arrangement of atoms sorts these requested, repeating styles.
Monoclinic �?Characterized by a few unequal axes, two of which intersect at an oblique angle, although the third is perpendicular on the aircraft of another two.
解理：无解理。所谓解理是指矿物被打击时，沿一定方向有规则地裂开形成光滑平面的性质。根据解理的程度可以分为五类：极完全解理、完全解理、中等解理、不完全解理和无解理，水晶属于无解理。
Crystals is often developed beneath average ailments from all ninety two The natural way occurring things apart from helium, and helium is usually crystallized at lower temperatures through the use of 25 atmospheres of strain.
13Nearly all personal computers have a quartz-crystal clock to regulate their Procedure.几乎所有的计算机都有一个石英晶体时钟来调节它们的运行。
广义的包裹体是指宝石内部含有的与主晶宝石化学成分、物理性质等不同的物质。
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。
Crystal Lattices There are seven systems of crystal buildings, which might be also called lattices or House lattices:
在透明的水晶中，隐裂纹呈亮晶晶的片状，有时还会有晕彩效应。这些裂纹是水晶在生长过程中，遇到外力挤压而在内部产生的一些隐形裂纹，隐裂纹在芙蓉石、紫水晶、白水晶球及白水晶柱中都很常见。有的裂纹后来被物质填充，形成愈合的裂纹，也就是原来的裂纹又长住了。这种裂纹对水晶的影响相对要小一些。
Clever Vocabulary: connected terms and phrases Geology: mineralogy beneficiation crystalline deposit gemologist gemology gold dust graphite idiomorphic intercrystalline like gold dust idiom magnesium mineral nugget pyrite quasicrystal seam silicon unmined vermiculite vulcanicity See additional results » You may also come across linked terms, phrases, and synonyms while more info in the subjects: