Crystal for Dummies
Crystal for Dummies
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其它描述：《庶物异名疏》中说： �?水精出大秦国，一名黎�?�?。结晶完整的水晶晶体，就如参差交错的马齿，所以人们又叫它马牙石。先民们最早用它研磨成眼镜片，因而送它一个眼镜石的绰号。水晶有通称，也有俗称。广州一带称水晶叫晶玉，又名鱼脑冻；江苏东海县山民发现水晶会 �?窜火�?�?，于是给它起个放光石的俗名。世间一物多名，不足为奇，而像水晶拥有这么多的别称，实不多见。瞧，从水玉、水碧、白玉、玉瑛、水精石英、黎难、晶玉到菩萨石、马牙石、眼镜石、放光石、千年冰、高山冻、鱼脑冻等等，简直构成一部奇石鉴赏史。
A fundamental thought in crystal structures may be the device cell. It is the smallest device of volume that permits similar cells to get organized jointly to occupy all out there House. The geometrical basis of all crystals is the lattice. A lattice might be seen as a regular and infinite arrangement of factors or atoms, exactly where Every stage or atom has an identical surrounding environment.
A crystal framework focuses on how the atoms are organized Within the crystal. Even so, crystallographers are interested in the general form and dimensions from the crystal along with its exterior attributes. To perform this, they need to know about the crystal technique.
Fig. 7: A template-directed solution can Management the placement of making blocks over a floor in the formation of intricate buildings.
C2 [ U ] clear glass of pretty good quality, typically with its surface Lower into sensitive patterns:
⑧、雕刻：立体感强，工艺高，做工精细，成本高。分手工雕刻图形、机器雕刻文字。
Crystals seem exceptional from all kinds of other rocks and minerals, but �?barring several Specific scenarios �?almost all minerals disguise a crystalline construction underneath the surface.
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。
Crystals in many cases are seen as something of huge magnificence, plus they are commonly made use of with diamonds or other stones for making parts of jewellery. The vast majority of crystals now are male-created in laboratories.
Solids which have short-variety buy but deficiency lengthy-array order are named amorphous. Nearly any material may be produced amorphous by rapid solidification from your melt (molten point out). This situation is unstable, and also the solid will crystallize in time. If the timescale click here for crystallization is yrs, then the amorphous point out appears secure.
The fundamental units of solids are possibly atoms or atoms which have put together into molecules. The electrons of the atom go in orbits that sort a shell construction throughout the nucleus. The shells are loaded in a systematic order, with Every shell accommodating only a small quantity of electrons. Various atoms have distinct quantities of electrons, that happen to be distributed in a attribute electronic framework of stuffed and partially loaded shells.
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。
The construction with the sodium atoms by yourself, or perhaps the chlorine atoms alone, is fcc and defines the device cell. The sodium chloride composition Hence is manufactured up of two interpenetrating fcc lattices. The cesium chloride lattice (Figure 3A) is based about the bcc structure; just about every other atom is cesium or chlorine. In this case, the device mobile is a cube. The third important structure for AB
This crystal framework is accountable for the exclusive Actual physical and chemical Attributes of sodium chloride, such as its significant melting point, electrical conductivity, and ability to sort ionic bonds effortlessly.