Crystal Fundamentals Explained
Crystal Fundamentals Explained
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轴性、光性：一轴晶正光性。正交偏光下所看到的一轴晶干涉图是独特的，其黑十字臂未达中心，形成中空的图案，俗称牛眼干涉图。中心部分通常为淡绿色或淡粉色。
Bismuth (Bi) seems to generally be a metallic, but the amount of electrons readily available for electrical conduction is similar to that of semiconductors. Actually, bismuth known as a semimetal. Molecular solids usually are crystals formed from molecules or polymers. They may be insulating, semiconducting, or metallic, according to the variety of molecules during the crystal. New molecules are constantly remaining synthesized, and plenty of are created into crystals. The quantity of diverse crystals is gigantic.
4Without a crystal ball, it's unattainable to mention where we'll be up coming yr.不用水晶球预卜未来，我们说不准明年处境如何呀。《牛津词典》
养殖晶：养殖晶是指，用天然水晶做种子，然后赋予天然水晶生长的高压条件，养殖器中有富含二氧化硅的分子。然后二氧化硅分子围绕天然水晶种生长，这样的水晶成分（分子式）与天然水晶是一摸一样的，唯一有差别的是，这样的水晶磁场作用没有天然水晶强。
You will discover many different crystals based upon geometric structures, crystal expansion, and materials. There might be preparations of hexagonal carbon atoms or amethyst that makes hexagonal pyramid constructions.
Monoclinic �?Characterised by 3 unequal axes, two of which intersect at an oblique angle, whilst the 3rd is perpendicular into the aircraft of another two.
光泽：玻璃光泽。断口处为油脂光泽。光泽，指宝石表面对光线反射的一种光学性质。观察水晶的光泽，可用手握着它，以灯光或窗户投进来的光线看表面反射，透明水晶亮度与光泽强弱有关。
11I carefully opened the package deal and located a crystal bell within.我小心地打开包裹，发现里面有一个水晶钟。
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⑤化学稳定�?非常好，在常温下仅溶解于氢氟酸，不溶解于其它各类酸、碱。在高温高压条件下可溶解于碳酸钠溶液中。
15The trick to an excellent thermoelectric product is often a crystal composition in which electrons can circulation freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。
There are actually just a few distinct device-mobile shapes, so many alternative crystals share just one device-mobile form. An important attribute of the unit cell is the quantity of atoms it incorporates. The overall number of here atoms in all the crystal is definitely the quantity in Each and every mobile multiplied by the quantity of device cells. Copper and aluminum (Al) Just about every have a person atom for every unit mobile, even though zinc (Zn) and sodium chloride have two. Most crystals have just a few atoms for each unit cell, but there are many exceptions. Crystals of polymers, such as, have Many atoms in Each individual device cell.
Crystals are categorized generally speaking classes, such as insulators, metals, semiconductors, and molecular solids. A single crystal of an insulator is often transparent and resembles a piece of glass. Metals are shiny Except they've rusted. Semiconductors are occasionally shiny and sometimes clear but are hardly ever rusty. Several crystals is usually classified as an individual form of reliable, while some have intermediate conduct. Cadmium sulfide (CdS) is often prepared in pure form and is a wonderful insulator; when impurities are additional to cadmium sulfide, it turns into a fascinating semiconductor.
crystal Alteration is variable: absent in several crystals, in Other people making dense sericite aggregates which may show some recrystallization effects to generate coarser-grained white mica. With the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are sometimes arranged in aggregates. Within the Cambridge English Corpus Furthermore, haloarchaeal cells were being embedded inside of salt crystals under laboratory disorders and subsequently analysed by light microscopy. From the Cambridge English Corpus The white clouds (usually sparse) have been also broadly considered being composed of tiny crystals of water ice, fairly like cirrus within our environment. In the Cambridge English Corpus They are really located in evaporite salt lakes and might be trapped in salt crystals through evaporation. With the Cambridge English Corpus Consequently, the cells (organelles and membranes) are wrecked mechanically by ice crystals, resulting in death by way of cell lysis. Within the Cambridge English Corpus The crystals were Utilized in the very first or 2nd orders of reflection. With the Cambridge English Corpus Inside our 8xperiments, the crystals were cubes that has a base location of eight e mm. Within the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : effect of temperature and stress.