The 5-Second Trick For Crystal
The 5-Second Trick For Crystal
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诗中“胜美玉”，“过冰清”，写出水晶的质地美，而“亦欲应时明”则描绘出水晶充满灵性的动态美，耐人寻味。罗维是有独特眼光，懂得水晶真谛，第一个称赞水晶超过美玉的伟大诗人。他的认识已被千年之后的科学理论所证实；以水晶为直接吟咏对象的诗篇还有：
Another exciting, and tasty, experiment would be to type substantial crystals working with sugar. By heating sugar with drinking water and afterwards permitting this Resolution evaporate on sticks, you can variety rock candy from sugar crystals!
Chemical Bonds The categories of chemical bonds shaped concerning atoms or groups of atoms in crystals rely on their sizing and electronegativity. You will find 4 groups of crystals as grouped by their bonding:
If you'd like to see how crystals are fashioned, you can do a little undertaking as part of your quite have kitchen area and find out the formation from the crystals occur with the have eyes . This can be done by Placing a small level of table salt into some frequent tap drinking water, wait around 24 hours, and you may see great cubed formations. This comes about because the h2o is evaporating, which brings about the atoms that make up the salt (the mineral) and the water to come back closer collectively.
How Crystals Form The whole process of forming a crystal known as crystallization. Crystallization typically takes place any time a strong crystal grows from a liquid or Resolution.
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对任何宝石来说，颜色都是非常重要的，水晶也不例外。如果是水晶晶体是有颜色的，如粉水晶、黄水晶、紫水晶等，其颜色评价的最高标准则是明艳动人，不带有灰色、黑色、褐色等其他色调。如粉水晶，颜色以粉红为佳；紫水晶，要求颜色为鲜紫，纯净不发黑；黄水晶，要求颜色不含绿色、柠檬色调，以金橘色为佳。对于发晶来说，晶体的颜色也是很重要的。相同发丝的金发晶，晶体完全无色（白水晶）和晶体略偏茶色，肉眼的视觉观感也是有差别的，所以前者的价格会高于后者。
26Some of the best ingesting glasses are constructed from guide crystal.一些最精致的酒杯是用铅晶质玻璃制成的。《柯林斯英汉双解大词典》
包裹体常见有固相、固液气三相组合、空洞以及双晶、色带等。水晶中典型的同生包裹体有自形的锐钛矿、气液两相包体等。
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。
看孔眼：对于缀穿水晶制品（如项链、手链、佛珠），要看孔眼是否平直，孔的粗细是否均匀，有无细小裂纹。孔壁必须清澈透明，无“白痕”。
隐晶类水晶外观是一块块的，不是成六角水晶簇状，但他们却也是属六方晶系的。但我们不能以肉眼观察到他们的六角形结晶，因为结晶的体积极为细小，需以显微镜协助下才能看到六角开结晶。而此类水晶非常平滑，因为结晶之间有“水化硅石”填补，玛瑙便属于此类。
This Assessment chronicles about two decades of investigation into creating a genetic code for crystal engineering. Rather than directing Organic processes, this code employs synthetic varieties of DNA to programme the assembly of nanoparticles and microparticles into 1D, Crystal second and 3D crystalline architectures, in which almost each and every element of the resultant structures could be systematically managed. In this conceptual framework, the structural and functional innovations are explained in an effort to determine the present volume of sophistication also to forecast long run directions on the System.
crystal Alteration is variable: absent in several crystals, in others manufacturing dense sericite aggregates which can exhibit some recrystallization outcomes to make coarser-grained white mica. With the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are occasionally organized in aggregates. With the Cambridge English Corpus Moreover, haloarchaeal cells have been embedded within salt crystals less than laboratory problems and subsequently analysed by mild microscopy. From your Cambridge English Corpus The white clouds (commonly sparse) were also widely thought to be remaining composed of little crystals of drinking water ice, fairly like cirrus inside our environment. Within the Cambridge English Corpus These are present in evaporite salt lakes and will be trapped in salt crystals in the course of evaporation. From the Cambridge English Corpus As a result, the cells (organelles and membranes) are destroyed mechanically by ice crystals, leading to Demise as a result of cell lysis. Within the Cambridge English Corpus The crystals have been Utilized in the first or second orders of reflection. In the Cambridge English Corpus In our 8xperiments, the crystals have been cubes by using a base space of eight e mm. Within the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : result of temperature and pressure.