Not known Factual Statements About Crystal
Not known Factual Statements About Crystal
Blog Article
看颜色：即使在同一种类的水晶中，它的不同部位的纹理、色泽也各式各有千秋。属于单色的，要色度均匀；在同一块水晶上有深浅的，则要求其色调纹路美观大方。
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。
景观水晶，就是包裹体组成各种造型特异的水晶，有的似山水，有的似人物，有些像文字，有些像动物，植物，器物等等。
Add to term checklist Increase to phrase record C2 [ U ] transparent glass of extremely superior quality, typically with its floor Lower into fragile patterns
There are actually a variety of crystals according to geometric buildings, crystal expansion, and substance. There is usually preparations of hexagonal carbon atoms or amethyst that makes hexagonal pyramid constructions.
, has the same composition, but there are two possibilities for selecting the holes which the atoms will occupy. The third layer could be put more than the atoms of the very first layer, creating an alternate layer sequence A
Increase to term listing Insert to term record [ C/U ] clear rock that appears like ice, or perhaps a bit of it
如果水晶内部杂质中有传说中人物的造型，如佛、星座、生肖等价值可能要高于同等颜色和净度的水晶。
水晶是有成色等级之分，影响水晶价位的因素很多，不像钻石以4C就可以判定，所以大家要多听多看多比较才能真正辨别出来。一般的标准是水晶石越大越好，越透越好，颜色越娇嫩越好，形状越典型越好。不过最重要还是自己喜欢，而选购时辨识真伪的方法大致有下列几种：
Solids which have shorter-selection buy but absence long-range purchase are named amorphous. Almost any materials is often made amorphous by immediate solidification with the melt (molten condition). This affliction is unstable, plus the stable will crystallize in time. When the timescale for crystallization is decades, then the amorphous point out seems secure.
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。
的释�?浏览 cryptologist cryptology cryptorchidism cryptosporidium crystal crystal ball crystal crystal clear idiom copyright crystalline #randomImageQuizHook.filename #randomImageQuizHook.isQuiz 用我们的趣味配图小测验考考你的词汇量
Crystals are labeled on the whole types, for instance insulators, metals, semiconductors, and molecular solids. A single crystal of an insulator will likely be clear and resembles a piece of glass. Metals are shiny Until they have rusted. Semiconductors are sometimes shiny and often transparent but are hardly ever rusty. Lots of crystals could be categorised as one sort of reliable, while others have intermediate behaviour. Cadmium sulfide (CdS) can be well prepared in pure kind and is a superb insulator; when impurities are added to cadmium sulfide, it becomes a fascinating semiconductor.
The C60 molecules, also called buckyballs, are pretty sturdy and almost incompressible. Crystals are formed these kinds of the balls are arranged in an fcc lattice using a one particular-nanometre spacing involving the centres more info of adjacent balls. The identical C70 molecule has The form of the rugby ball; C70 molecules also kind an fcc crystal when stacked together. The solid fullerenes form molecular crystals, with weak binding—supplied by van der Waals interactions—in between the molecules.