The best Side of Crystal

The best Side of 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：

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Chemical Bonds The types of chemical bonds formed involving atoms or groups of atoms in crystals count on their measurement and electronegativity. There are actually four groups of crystals as grouped by their bonding:

看原料：选料精良的水晶制品，应看不到胶口及棉絮；质地纯净、光润、晶莹为好。

How Crystals Kind The whole process of forming a crystal known as crystallization. Crystallization usually takes place every time a sound crystal grows from the liquid or Answer.

Lattices might have one particular lattice stage for each mobile or more than one, yielding a complete of fourteen Bravais crystal lattice styles. Bravais lattices, named for physicist and crystallographer Auguste Bravais, describe the three-dimensional array created by a set of discrete details.

水晶与高档宝石的净度要求有很大不同。高档宝石稀少罕见，所以一般人们普遍对高档宝石的净度不会过于苛求。而水晶的产量着实大得惊人，所以通常人们会要求水晶净度越高越好，尽量避免有较明显的内含物的水晶。

There exists a similar directive about crystal glass which differentiates concerning full lead crystal, direct crystal and crystal.

Many crystals behave like butter in that they are challenging at low temperatures but soft at higher temperatures. They are really called solids whatsoever temperatures underneath their melting issue. A probable definition of the strong is really an object that retains its form if still left undisturbed. The pertinent issue is just how long the object retains its condition. A really viscous fluid retains its shape for an hour or so although not a year. A reliable have to continue to keep its condition for a longer time than that.

晶体 Silicon crystals developed in a laboratory transform mild into electrical Power. 在实验室中长成的硅晶体可将光线转变为电能。

One crystals of metals are tender and malleable, while polycrystalline metals are more difficult and more powerful and tend to be more handy industrially. Most polycrystalline products is usually made into significant one crystals just after prolonged heat cure. Previously blacksmiths would warmth a piece of metallic to make it malleable: warmth helps make a number of grains develop substantial by incorporating scaled-down ones. The smiths would bend the softened metallic into form and then pound it awhile; the pounding would ensure it is polycrystalline once more, expanding check here its toughness.

Crystallography is definitely the research of crystals, and it promotions with all the things from perfect geometric shapes to seemingly random conglomerations of particles and minerals.

Crystals are categorised normally groups, which include insulators, metals, semiconductors, and molecular solids. A single crystal of an insulator is normally clear and resembles a piece of glass. Metals are shiny Unless of course they've got rusted. Semiconductors are occasionally shiny and sometimes transparent but are never ever rusty. Quite a few crystals can be categorized as just one sort of reliable, while others have intermediate conduct. Cadmium sulfide (CdS) may be well prepared in pure form and is a wonderful insulator; when impurities are extra to cadmium sulfide, it will become an interesting semiconductor.

对于紫水晶黄水晶这样的单色水晶，通常要观察它的二色性，即使是最顶级的紫水晶黄水晶也是有色差的，通过这个方法可以鉴别是否加色。