New Step by Step Map For Crystal
New Step by Step Map For Crystal
Blog Article
17These rings are indicative of the crystal structure of nickel and will be described only by invoking wavelike Qualities of light.这些光圈表明了了镍的晶体结构，而且只能通过光线中波的特征来解释。
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。
晶及其石英岩类玉石是中低档宝玉石，虽比不上钻石、红蓝宝石的高贵，但在加工中如果构思巧妙而且加工精细，同样具有很高的价值。如中国传统的玛瑙“虾盘”、“龙盘”、“水漫金山�?水胆玛瑙摆件)都被誉为国家级宝玉石。
Add to phrase list Include to term listing C2 [ U ] transparent glass of incredibly good quality, typically with its surface area Slice into sensitive patterns
看抛光：抛光的好坏直接影响到水晶制品的身价。抛光分为软抛光与硬抛光。
They're going to inevitably come up with a awesome little uniform cluster of atoms, This is often the process of rising crystals. The more they are able to come jointly, the greater of a formation is going to be visible on the naked eye. Researchers can establish what mineral They can be checking out by how the crystals sort.
Incorporate to term record Insert to word checklist [ C/U ] transparent rock that appears like ice, or maybe a piece of it
Hexagonal �?Characterised by 4 axes, three of which might be equivalent in duration and intersect at one hundred twenty degrees, having a fourth axis perpendicular to another three.
Cite Whilst each and every hard work is designed to stick to citation fashion guidelines, there might be some discrepancies. Make sure you make reference to the appropriate fashion handbook or other resources In case you have any thoughts. Choose Citation Design and style
The definition of the good appears evident; a solid is normally thought of as being hard and business. On inspection, having said that, the definition results in being less easy. A dice of butter, by way of example, is difficult right after getting saved inside a refrigerator and it is Evidently a sound. Following remaining about the kitchen area counter for each day, the identical dice gets to be rather smooth, and it is actually unclear In the event the butter should really still be regarded a stable.
被主体水晶所捕获的包裹体。原生包裹体通常为固相，形态较规则。水晶中典型的原成包裹体有金红石、电气石、黄铁矿等，也会见到岩石碎屑或集合体。
Crystals are not just renowned for his or her Actual physical physical appearance, but diverse crystals of different materials and formations may lead to an enormous range of uses and Actual physical Attributes.
Crystals are categorized in general categories, for example insulators, metals, semiconductors, and molecular solids. Only one crystal of an insulator is generally clear and resembles a bit of glass. Metals are shiny Except if they've got rusted. Semiconductors are occasionally shiny and often transparent but are never rusty. Numerous crystals might be categorised as only one style of solid, while some have intermediate conduct. Cadmium sulfide (CdS) might be well prepared in pure form and is a wonderful insulator; click here when impurities are additional to cadmium sulfide, it gets to be a fascinating semiconductor.
The C60 molecules, also known as buckyballs, are pretty powerful and Nearly incompressible. Crystals are shaped this sort of that the balls are arranged in an fcc lattice having a a person-nanometre spacing concerning the centres of adjacent balls. The very similar C70 molecule has The form of the rugby ball; C70 molecules also variety an fcc crystal when stacked alongside one another. The solid fullerenes form molecular crystals, with weak binding—supplied by van der Waals interactions—amongst the molecules.