The best Side of Crystal
The best Side of Crystal
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17These rings are indicative of the crystal framework of nickel and will be described only by invoking wavelike Homes of sunshine.这些光圈表明了了镍的晶体结构，而且只能通过光线中波的特征来解释。
A elementary notion in crystal buildings will be the unit mobile. It's the smallest device of volume that permits similar cells to be organized alongside one another to occupy all obtainable House. The geometrical foundation of all crystals may be the lattice. A lattice might be considered as a daily and infinite arrangement of points or atoms, where Every single place or atom has A similar encompassing setting.
人造水晶分为熔炼水晶与养殖晶：据水晶专家汪毅的阐述，随着水晶的价值提高，喜欢的人增多，水晶也引起了作伪者的兴趣，现阶段中国水晶市场常见的造假方法为：
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根据美国已经了解的情况，统计局的专家和其他人口统计学家在他们的视野中提供了一个不可抗拒的水晶球。
Find out how The form on the crystals establish the various minerals into familiesMinerals crystallize In accordance with amongst 7 motifs, often known as crystal units.
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发晶：无色、浅黄、浅褐等，可因含金红石常呈金黄、褐红等色，含电气石常呈灰黑色；含阳起石而呈灰绿色。
Among the binary crystals, the best constructions to visualize are Individuals with equal numbers of the two types of atoms. The structure of sodium chloride is predicated on the dice. To build the lattice, the sodium and chlorine atoms are placed on alternate corners of a dice, as well as composition is recurring (Determine 3B).
多色�?无色水晶没有多色性。有色水晶有弱到强的多色�?表现为体色的不同深浅。
15The trick to a very good thermoelectric materials is a crystal framework where 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 find only a few distinctive unit-mobile designs, so many alternative crystals share only one unit-cell style. An essential attribute of a unit mobile is the get more info number of atoms it is made up of. The overall variety of atoms in the entire crystal may be the range in each mobile multiplied by the volume of unit cells. Copper and aluminum (Al) Each and every have 1 atom per device cell, whilst zinc (Zn) and sodium chloride have two. Most crystals have just a few atoms per device cell, but there are numerous exceptions. Crystals of polymers, for example, have 1000s of atoms in Each individual device cell.
14For example, We've Quartz crystal clocks and watches accurate to inside 1 minute a year.例如，我们使用的每年误差不超过one分钟的石英水晶钟表和手表。
Tetragonal �?Characterized by a few mutually perpendicular axes, two of which can be equal in length, although the 3rd is longer or shorter and perpendicular to the other two.