A Simple Key For Crystal Unveiled
A Simple Key For Crystal Unveiled
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Not all crystals are Similarly crystalline. There are sometimes impurities, as well as ionic & covalent between molecules can generate vastly different constructions from a similar materials. A terrific example of this are diamonds and graphene.
⒉棉、云雾或渣状包裹体、杂质在透明水晶内部有雾蒙蒙的现象或是感觉里面像有棉絮状、渣状物质一样的包裹体，这些包裹体的存在，影响水晶的整体美观。还有的水晶内局部含有黑斑或其他颜色的斑状物质，与水晶整体不协调，被视为水晶的杂质，有这种杂质的水晶是次品。
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。
水碧：《山海经》中，水晶又被称作水碧： �?又南三百里，日耿山，无草木，多水碧 �?，郭璞注�?�?亦水玉类 ”。这种称谓常被文人所引用，晋代郭景纯《璞江赋》道�?�?鬼，水碧�?�?。水晶又有人称它叫玉瑛。《符瑞图》载�?美石似玉，水精谓之玉瑛也�?”
You will discover numerous crystals according to geometric structures, crystal advancement, and materials. There could be preparations of hexagonal carbon atoms or amethyst which makes hexagonal pyramid buildings.
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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。
1A crystal chandelier lit the home.一盏水晶吊灯照亮了房间。《柯林斯英汉双解大词典》
Several crystals behave like butter in that they are tough at lower temperatures but tender at better temperatures. They can be known as solids in any respect temperatures under their melting issue. A possible definition of a sound can be an object that retains its condition if left undisturbed. The pertinent challenge is how much time the item keeps its form. A remarkably viscous fluid retains its condition for an hour or so but not a yr. A good will have to hold its form longer than that.
A crystal program refers back to the classification of crystals depending on the geometric arrangement and symmetry in their lattice constructions. You will discover seven major crystal methods:
Through the Cambridge English Corpus We say the chain topology during the large w location acts as the proverbial ' scratch-on-theglass ' wanted from the natural and organic chemistry laboratory to generate crystals. From the Cambridge English Corpus Consistent-tension and temperature molecular-dynamics simulations of crystals in the lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. Within the Cambridge English Corpus In addition to these, dust particles are already noticed click here in reduced-temperature plasmas, like People Employed in plasma processing and plasma crystals. With the Cambridge English Corpus The ultimate Section of the book focuses on peculiarities of strongly coupled dusty plasmas, like the development of dust crystals and connected interesting forces. In the Cambridge English Corpus Total characterization of harm threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. Through the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or maybe more irregular, Main morphologies were not observed. In the Cambridge English Corpus See all examples of crystal These illustrations are from corpora and from resources on the web. Any viewpoints during the illustrations never symbolize the view with the Cambridge Dictionary editors or of Cambridge College Push or its licensors.
Crystals are not merely renowned for his or her Actual physical physical appearance, but distinct crystals of various resources and formations can result in an unlimited a number of employs and Bodily Homes.
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�?�?。
矿物成分：针铁矿、赤铁矿、金红石、磁铁矿、电气石、石榴石、云母、绿泥石等形成了包裹体水晶，如发晶、钛晶、绿幽灵等，发晶中则含有肉眼可见的似头发状的针状矿物的包裹体形成。含锰和铁者称紫水晶；含铁�?；呈金黄色或柠檬�?)称黄水晶；含锰和钛呈玫瑰色者称蔷薇石英，即粉水晶；烟色者称烟水晶；褐色者称茶晶；黑色透明者称为墨晶。