The Basic Principles Of Crystal
The Basic Principles Of Crystal
Blog Article
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。
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。
Tetragonal: These crystals variety prisms and double pyramids. The framework is sort of a cubic crystal, except just one axis is for a longer period than the opposite.
Crystalline composition is characterized by a geometrical, repeating sample of symmetric molecular construction. The arrangement of atoms types these purchased, repeating designs.
无色水晶与无色长石因折射率和密度十分接近故较难区分。主要方法是放大检查。长石有两组极完全解理，显微镜下可见两组解理相交而成的“娱蛤状”包裹体或细直的纹理，而水晶则无解理发育，仅有时可见断续不规则的裂理。
Springer Mother nature continues to be neutral with regards to jurisdictional statements in released maps and institutional affiliations.
Skip to principal articles Thanks for viewing character.com. You might be employing a browser version with minimal aid for CSS. To get the top expertise, we propose you employ a far more updated browser (or transform off compatibility method in World-wide-web Explorer).
13Nearly all desktops contain a quartz-crystal clock to control their operation.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。
颜色：无色，浅至深的紫色，浅黄、中至深黄色，浅至深褐、棕色，绿至黄绿色，浅至中粉红。
All crystal ball crystal crystal clear copyright liquid crystal crystal lattice crystal composition liquid crystal Show See all meanings Idioms and phrases crystal obvious idiom
Crystallography may be the analyze of crystals, and it discounts with every little thing from excellent geometric styles to seemingly random conglomerations of particles and minerals.
Crystals are categorized generally speaking categories, for instance insulators, metals, semiconductors, and molecular solids. A single crystal of the insulator is generally transparent and resembles a bit of glass. Metals are shiny Until they've rusted. Semiconductors are sometimes shiny and often clear but are hardly ever rusty. A lot of crystals can be categorized Crystal as one sort of solid, while others have intermediate conduct. Cadmium sulfide (CdS) is often geared up in pure form and is a superb insulator; when impurities are added to cadmium sulfide, it will become an interesting semiconductor.
crystal Alteration is variable: absent in lots of crystals, in others producing dense sericite aggregates which can exhibit some recrystallization consequences to create coarser-grained white mica. From the Cambridge English Corpus The tridymite crystals are rectangular or wedge-shaped and are sometimes organized in aggregates. With the Cambridge English Corpus Also, haloarchaeal cells have been embedded within just salt crystals less than laboratory ailments and subsequently analysed by mild microscopy. From your Cambridge English Corpus The white clouds (generally sparse) were being also widely regarded as staying composed of tiny crystals of h2o ice, rather like cirrus inside our atmosphere. Through the Cambridge English Corpus They're present in evaporite salt lakes and will be trapped in salt crystals throughout evaporation. From your Cambridge English Corpus Hence, the cells (organelles and membranes) are ruined mechanically by ice crystals, leading to death by way of mobile lysis. Through the Cambridge English Corpus The crystals had been Utilized in the very first or 2nd orders of reflection. Through the Cambridge English Corpus In our 8xperiments, the crystals have been cubes by using a foundation region of eight e mm. Through the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : outcome of temperature and pressure.