A Simple Key For Crystal Unveiled
A Simple Key For Crystal Unveiled
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看颜色：即使在同一种类的水晶中，它的不同部位的纹理、色泽也各式各有千秋。属于单色的，要色度均匀；在同一块水晶上有深浅的，则要求其色调纹路美观大方。
Crystals are wonderful rock formations which have astonished humans for Countless years. They are employed for numerous various things, not just for decoration. Most of the initial radios at any time invented made use of crystals to transmit the radio waves. Some devices, like quartz watches and laser crystals, use special Qualities and harmonic capabilities of crystals to make really correct measurements and adjustments.
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。
Fig. 3: A library of lattice symmetries is often accessed by changing the particle core and DNA shell.
断口：贝壳状。断口也叫破口。它是指矿物被打击后产生不规则的破裂，破裂裂面凹凸不平称为断口。根据断口的形状可分为贝壳状和锯齿状。
你们都知道，拿起一个水晶棱镜，让一束阳光通过它，就会得到一个光谱，看起来就像一条连续的彩虹色带。
Add to word record Include to term checklist [ C/U ] transparent rock that looks like ice, or perhaps a piece of it
如果水晶内部杂质中有传说中人物的造型，如佛、星座、生肖等价值可能要高于同等颜色和净度的水晶。
Crystals are often viewed as one thing of immense beauty, plus they are generally employed with diamonds or other stones to help make items of jewelry. Nearly all of crystals now are guy-designed in laboratories.
看文化：水晶里面的包裹体象形，能与文化、宗教及历史有所牵连的话，价格往往会比水晶本身的价值高出几倍甚至几百倍。
15The trick to a great thermoelectric product is really a crystal framework through which electrons can move freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。
You will discover just a few distinct device-mobile shapes, so numerous crystals share only one unit-mobile style. An essential characteristic of a unit mobile is the amount of atoms it contains. The overall quantity of atoms in the complete crystal is definitely the variety in Every cell multiplied by the number of unit cells. Copper and aluminum (Al) Each and every have one particular atom for every device mobile, although zinc (Zn) and sodium chloride have two. Most crystals have only some atoms per unit mobile, but usually there are some exceptions. Crystals of polymers, for instance, have A large number of atoms in Every device mobile.
The framework from the sodium atoms alone, or even the chlorine atoms on your own, is fcc and defines the device mobile. The sodium chloride structure As a result is made up of two interpenetrating fcc lattices. The cesium chloride lattice (Determine 3A) is based about the bcc construction; each individual other atom is cesium or chlorine. In such cases, the device cell is actually a dice. The third significant construction for AB
Binary crystals are found in numerous buildings. Some pairs of elements form more than one framework. At area temperature, cadmium sulfide could crystallize both inside the zinc blende or wurtzite construction. Alumina also has two possible buildings at home temperature, α-alumina (corundum) and β-alumina. Other binary crystals show different constructions at diverse temperatures. Among the many most advanced crystals are People of silicon dioxide (SiO2), which has seven distinct buildings at a variety of temperatures and pressures; the commonest of such get more info structures is quartz.