New Step by Step Map For Crystal
New Step by Step Map For Crystal
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李商隐，杜牧，白居易，欧阳修，苏轼，呈大昌，辛弃疾，杨万里，吴文英，杨基，魏源等诗坛，词林大家都有歌吟水晶的佳篇传世。
Bismuth (Bi) appears for being a metallic, but the number of electrons available for electrical conduction is comparable to that of semiconductors. In reality, bismuth is known as a semimetal. Molecular solids tend to be crystals shaped from molecules or polymers. They can be insulating, semiconducting, or metallic, according to the kind of molecules while in the crystal. New molecules are repeatedly currently being synthesized, and several are created into crystals. The quantity of unique crystals is big.
水晶文化历史悠久，古人曾赋予它一串极富美感的雅称：水玉、水精、水碧、石英等。
Fig. three: A library of lattice symmetries is usually accessed by changing the particle core and DNA shell.
How Crystals Sort The process of forming a crystal is termed crystallization. Crystallization typically occurs whenever a strong crystal grows from a liquid or Alternative.
当二氧化硅结晶完美时就是水晶；结晶不完美的就是石英：二氧化硅胶化脱水后就是玛瑙；二氧化硅含水的胶体凝固后就成为蛋白石；二氧化硅晶粒小于几微米时，就组成玉髓、燧石、次生石英岩。
⑦、镀彩：运用类似电镀的手法在水晶表面以不同的色彩，层面较薄，经摩擦可划伤�?；出现划痕，由于镀彩经常位于底部，因此在镀彩底部经常采用其它对象附着，如生肖文镇。
损伤是指水晶由于加工或不小心摔掉、碰撞等原因，人为造成的损坏。它可以是破口，也可以是凹坑等。
Amongst the binary crystals, the best buildings to visualise are those with equal figures of The 2 types of atoms. The composition of sodium chloride is based with a dice. To assemble the lattice, the sodium and chlorine atoms are put on alternate corners of the dice, and the construction is recurring (Determine 3B).
[ C/U ] clear glass of top of the range, usually with its floor Lower into patterns that mirror light
用手去触摸水晶，天然水晶通常温度要比人造水晶的要凉的多；用眼观察，天然水晶通常有棉絮状的包裹体，这个是人造水晶所没有的。
There are only some distinctive device-cell styles, so numerous crystals share just one unit-mobile kind. A crucial characteristic of a unit mobile is the volume of atoms it incorporates. The total amount of atoms in the entire crystal is the number in Every cell multiplied by the quantity of unit cells. Copper and aluminum (Al) Every have 1 atom per device mobile, whilst zinc (Zn) and sodium chloride have two. Most crystals have only a few atoms per device mobile, but there are some exceptions. Crystals of polymers, as an example, have Many atoms in each unit cell.
Crystals are categorised generally types, like insulators, metals, semiconductors, and molecular solids. Only one crystal of the insulator is generally transparent and resembles a bit of glass. Metals are shiny Until they may have rusted. Semiconductors are occasionally shiny and often clear but are in no way rusty. Lots of crystals can be labeled as just one style of sound, while others have intermediate behaviour. Cadmium sulfide (CdS) is often well prepared in pure variety and is an excellent insulator; when impurities are additional to cadmium sulfide, it turns into an interesting semiconductor.
crystal Alteration is variable: absent in lots of crystals, in Other people creating dense sericite aggregates which may display some recrystallization results to create coarser-grained white mica. With the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are occasionally arranged in aggregates. From the Cambridge website English Corpus In addition, haloarchaeal cells were being embedded in salt crystals below laboratory conditions and subsequently analysed by light-weight microscopy. Within the Cambridge English Corpus The white clouds (generally sparse) were being also greatly regarded as remaining made up of tiny crystals of h2o ice, somewhat like cirrus within our environment. Through the Cambridge English Corpus They're located in evaporite salt lakes and may be trapped in salt crystals for the duration of evaporation. Within the Cambridge English Corpus For that reason, the cells (organelles and membranes) are destroyed mechanically by ice crystals, bringing about Dying as a result of cell lysis. Through the Cambridge English Corpus The crystals were being Utilized in the main or 2nd orders of reflection. From the Cambridge English Corpus In our 8xperiments, the crystals were cubes having a foundation area of 8 e mm. From the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : result of temperature and tension.