8Where do we get this magic wand and crystal ball?我们到哪里获得这种魔棒和水晶玻璃球？
A elementary idea in crystal constructions is the unit cell. It is the smallest device of quantity that enables identical cells being organized together to occupy all obtainable House. The geometrical basis of all crystals is definitely the lattice. A lattice can be seen as a daily and infinite arrangement of details or atoms, wherever each place or atom has A similar bordering natural environment.
10This may be the silicon chip—a bit chip of silicon crystal.这是硅芯片——一个硅晶体的小芯片。
Big crystals of diamond are worthwhile gemstones. The crystal has other interesting properties; it's the highest sound velocity of any sound and is the best conductor of heat. In addition to diamond, one other common type of carbon is graphite, and that is a layered product. Every carbon atom has a few coplanar in the vicinity of neighbours, forming an arrangement known as the honeycomb lattice. Three-dimensional graphite crystals are acquired by stacking related levels.
How Crystals Type The entire process of forming a crystal is named crystallization. Crystallization typically occurs whenever a good crystal grows from a liquid or Resolution.
Lattices could have a single lattice place per mobile or multiple, yielding a complete of 14 Bravais crystal lattice sorts. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the three-dimensional array made by a set of discrete points.
水晶的评价标准和高端宝石有所不同。多数高端宝石把颜色放在评价的第一位，而对水晶来说，颜色和净度（水晶行业称作晶体）是近乎同等重要的因素：
市场上有很多人把熔炼水晶也叫做合成水晶，那是不准确的，一般都是以水晶废料为原料在高温高压下熔炼出来的，而不是结晶成的，不具备水晶的晶体特性，所以不能把熔炼水晶与合成水晶混为一谈；但是熔炼水晶耐高温，用优质二氧化硅熔炼成的熔炼水晶可以做成实用产品比如水晶杯、烤盘、茶具等，实际上一代伟人毛泽东主席的水晶棺就是选用东海优质水晶熔炼而成的。
本词条由中国科学院大学地球与行星科学学院、中国科学院地质与地球物理研究所 参与编辑并审核，经科普中国·科学百科认�?。
22Working from what America previously is aware of about by itself, the bureau's experts as well as other demographers offer an irresistible, if clouded, crystal ball among the their visions.
. The second layer website is shaded from the determine. It's a similar airplane-triangular framework; the atoms sit from the holes shaped by the very first layer. The very first layer has two equivalent sets of holes, though the atoms of the next layer can occupy just one established. The third layer, labeled C
水晶形成后由于外力作用或某种人为原因使水晶产生大的裂隙或裂纹，这种裂纹有大有小，对水晶的影响也有大小之分。
水玉：中国最古老的称法叫水玉，意谓似水之玉，又说是 �?千年之冰所�?�?。唐代诗人温庭筠《题李处士幽居》写道：�?水玉簪头白角巾，瑶琴寂历拂轻�?”。水玉一词最早频繁出于《山海经》：�?又东三百里，日堂庭之�?…�?多水�?”；�?丹山出焉，东南流注于洛水，其中多水玉 ”；�?逐水出焉，北流注于渭，其中多水玉 ”。司马相如《上林赋》曰�?�?水玉磊河 �?。水晶得名水玉，古人是看�?�?其莹如水，其坚如�?�?的质地。
水晶的价值根据品质、块体的大小、美感和产量多少的不同相差较大。遇到好的天然水晶要敢于下手，但好的水晶一般大家都想得到，值与不值，就要看经验了。由于天然水晶的开采和制作原因，没有瑕疵的水晶很难得到，纯净的饰品要达到与合成水晶媲美的品质，实在是很难得。另外，由于水晶的特性，在佩戴过程中，也会改变其等级，比如因为某种原因，有可能会逐渐产生较大裂纹。