5 Easy Facts About Crystal Described
5 Easy Facts About Crystal Described
Blog Article
17These rings are indicative with the crystal framework of nickel and can be explained only by invoking wavelike properties 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。
Crystals are gorgeous rock formations which have shocked humans for thousands of a long time. They are useful for lots of different things, not just for decoration. A lot of the initial radios at any time invented utilized crystals to transmit the radio waves. Some instruments, like quartz watches and laser crystals, use Unique Qualities and harmonic capabilities of crystals to create remarkably exact 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。
Big crystals of diamond are precious gemstones. The crystal has other appealing Qualities; it's the highest seem velocity of any stable and is the best conductor of warmth. Other than diamond, the other popular form of carbon is graphite, which can be a layered substance. Just about every carbon atom has a few coplanar around neighbours, forming an arrangement called the honeycomb lattice. Three-dimensional graphite crystals are obtained by stacking similar layers.
2She was carrying a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
They will eventually generate a pleasant little uniform cluster of atoms, This can be the process of developing crystals. The more they're able to appear with each other, the greater of the formation will be obvious into the bare eye. Researchers can establish what mineral They can be considering by how the crystals sort.
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：
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。
Amongst the binary crystals, the best buildings to visualise are People with equal numbers of The 2 different types of atoms. The construction of sodium chloride relies over a cube. To assemble the lattice, the sodium and chlorine atoms are put on alternate corners of a dice, plus the framework is repeated (Figure 3B).
crystal The recently crystallized quartz grains are characterised by elongate crystals oriented oblique on the shear band margins, defining a typical grain-shape foliation. 来自 Cambridge English Corpus We say the chain topology during the substantial w location functions because the proverbial ' scratch-on-theglass ' essential in the organic and natural chemistry laboratory to generate crystals. 来自 Cambridge English Corpus The age scatter amid the individual crystals could replicate incorporation of xenocrysts from before magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene sorts neutral to pale brown, subhedral to anhedral crystals, often made up of inclusions of plagioclase microlaths and opaque phases.
Solitary crystals of metals are gentle and malleable, even though polycrystalline metals are more difficult and more robust and tend to be more practical industrially. Most polycrystalline elements may be designed into large single crystals after extended heat therapy. In past times blacksmiths would heat a piece of metallic to make it malleable: heat tends to make several grains expand big by incorporating smaller sized kinds. The smiths would bend the softened steel into condition and after that pound it awhile; the pounding would allow it to click here be polycrystalline again, increasing its strength.
You will find only some unique device-cell designs, so many different crystals share a single unit-cell variety. A crucial attribute of the device cell is the amount of atoms it is made up of. The overall variety of atoms in your entire crystal may be the selection in Just about every mobile multiplied by the number of unit cells. Copper and aluminum (Al) Every have a single atom for each device cell, although zinc (Zn) and sodium chloride have two. Most crystals have only some atoms per unit cell, but there are some exceptions. Crystals of polymers, for instance, have Many atoms in each unit mobile.
在透明的水晶中，隐裂纹呈亮晶晶的片状，有时还会有晕彩效应。这些裂纹是水晶在生长过程中，遇到外力挤压而在内部产生的一些隐形裂纹，隐裂纹在芙蓉石、紫水晶、白水晶球及白水晶柱中都很常见。有的裂纹后来被物质填充，形成愈合的裂纹，也就是原来的裂纹又长住了。这种裂纹对水晶的影响相对要小一些。
Fig. five: The opportunity to recognize described crystal behavior is depending on the symmetry engineering technique.