The Greatest Guide To Crystal
The Greatest Guide To Crystal
Blog Article
A reliable is crystalline if it's prolonged-selection order. After the positions of the atom and its neighbours are known at a single place, the spot of each and every atom is known specifically through the entire crystal. Most liquids deficiency prolonged-assortment purchase, Though numerous have quick-range buy. Quick range is outlined as the main- or 2nd-closest neighbours of the atom. In lots of liquids the main-neighbour atoms are arranged in the same structure as from the corresponding sound section.
12He tried using yet again in several other cities and succeeded with Crystal Caramels.他又在其他几个城市再次尝试，并成功制出了水晶焦糖。
发晶的价值取决于发的颜色、罕见性及大小，一般是发色鲜艳、块度大的价格高。水胆水晶的价值主要取决于水胆及晶体的大小、透明度的高低。如果水胆较大并有一定形态，便可加工成较为珍贵的工艺品。另外水胆中的水也有一定的科学研究价值，通过它们可了解几百万年前地球上水的成分及变化。
The ordered inside composition of huge crystals, such as the fluorite and quartz demonstrated here, is mirrored within their geometric shapes.
C2 [ U ] transparent glass of really top quality, normally with its area cut into fragile patterns:
Encyclopaedia Britannica's editors oversee topic regions where they may have comprehensive understanding, whether or not from years of encounter obtained by focusing on that content material or through examine for an advanced diploma. They compose new articles and validate and edit content obtained from contributors.
水晶原石观赏石，从字面意义理解：观赏水晶石的原貌，即经过抛光去皮后的包裹体水晶和原色水晶，不需雕刻不求象形就具有非常高的观赏价值和收藏价值。此类水晶观赏石对质地要求非常之高，水晶晶体通透干净，颜色艳丽，意境鲜明深刻的价值就高，它的价值特点就好比钻石，实实在在石头本身的价值。
Hexagonal �?Characterised by 4 axes, a few of that happen to be equivalent in duration and intersect at 120 degrees, with a fourth axis perpendicular to one other a few.
Lots of crystals behave like butter in that they're tough at very low temperatures but delicate at higher temperatures. They may be identified as solids in the least temperatures under their melting position. A achievable definition of the sound is definitely an item that retains its form if remaining undisturbed. The pertinent situation is how much time the item retains its form. A remarkably viscous fluid retains its shape for an hour or so although not a 12 months. A stable have to retain its condition extended than that.
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 content is really a crystal structure in which electrons can move 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。
正常的水晶在生长时，多可以发现和柱形尖端棱线平行的生长纹（development lines）。由于在地底、岩洞中的生长空间多狭窄，尤其在遇到地震时，或地壳变动时，甚至容易遭到其他矿石的挤压，常常会压迫产生不同的「晶面」。还有，当水晶还是在液态状的时候，常常也会包覆着其他的矿石、泥灰一起结晶成长，如金红石（稍后变成发晶）、火山泥灰（稍后变成幻影水晶）等等。所有的这些，都是「自然的一部分」，请不要视为「瑕疵」。
水精：水晶为何称为水精，《广雅》有巧解：�?水之精灵�?”；李时珍则说：�?莹洁晶光，如水之精英 ”。细加考究，此称还蕴含浓厚的宗教意味呢。水精一名，最初见于佛书，后汉支曜翻译的《具光明定意经》说：�?其所行道，色如水�?�?。
crystal Alteration is variable: absent in lots of crystals, in Many others generating dense sericite aggregates which can exhibit some recrystallization effects to create coarser-grained white mica. From your Cambridge English Corpus The tridymite crystals are rectangular or wedge-shaped and are occasionally organized in aggregates. With the Cambridge English Corpus Furthermore, haloarchaeal cells were embedded inside of salt crystals under laboratory ailments and subsequently analysed by light-weight microscopy. Within the Cambridge English Corpus The white clouds (usually sparse) had been also broadly viewed as getting composed read more of little crystals of water ice, alternatively like cirrus within our environment. From the Cambridge English Corpus They are really found in evaporite salt lakes and can be trapped in salt crystals throughout evaporation. In the Cambridge English Corpus Thus, the cells (organelles and membranes) are ruined mechanically by ice crystals, resulting in Demise via cell lysis. From your Cambridge English Corpus The crystals were Utilized in the 1st or next orders of reflection. In the Cambridge English Corpus In our 8xperiments, the crystals have been cubes using a foundation region of 8 e mm. From the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : result of temperature and tension.