THE BASIC PRINCIPLES OF CRYSTAL

The Basic Principles Of Crystal

The Basic Principles 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:

Bismuth (Bi) seems to be a steel, but the amount of electrons readily available for electrical conduction is similar to that of semiconductors. Actually, bismuth is named a semimetal. Molecular solids tend to be crystals shaped from molecules or polymers. They may be insulating, semiconducting, or metallic, depending upon the form of molecules within the crystal. New molecules are repeatedly being synthesized, and several are created into crystals. The volume of various crystals is enormous.

These improvements contain unique structures with programmable lattice symmetries and perfectly-defined crystal patterns, responsive materials that leverage the intrinsic Houses of nucleic acids to manipulate structures on demand, nanoparticle superlattices grown epitaxially from surfaces and colloidal crystals that offer insights into gentle–issue interactions. Looking forward, we challenge the community to leverage the incredible structural control afforded by crystal engineering with DNA to synthesize classes of purposeful components that push beyond what is feasible with Obviously occurring crystalline elements or People made by additional typical procedures.

水碧:《山海经》中,水晶又被称作水碧: �?又南三百里,日耿山,无草木,多水碧 �?,郭璞注�?�?亦水玉类 ”。这种称谓常被文人所引用,晋代郭景纯《璞江赋》道�?�?鬼,水碧�?�?。水晶又有人称它叫玉瑛。《符瑞图》载�?美石似玉,水精谓之玉瑛也�?”

. These 4 buildings comprise most of the binary crystals with equivalent get more info figures of cations and anions.

Monoclinic �?Characterised by 3 unequal axes, two of which intersect at an oblique angle, although the 3rd is perpendicular towards the airplane of one other two.

对任何宝石来说,颜色都是非常重要的,水晶也不例外。如果是水晶晶体是有颜色的,如粉水晶、黄水晶、紫水晶等,其颜色评价的最高标准则是明艳动人,不带有灰色、黑色、褐色等其他色调。如粉水晶,颜色以粉红为佳;紫水晶,要求颜色为鲜紫,纯净不发黑;黄水晶,要求颜色不含绿色、柠檬色调,以金橘色为佳。对于发晶来说,晶体的颜色也是很重要的。相同发丝的金发晶,晶体完全无色(白水晶)和晶体略偏茶色,肉眼的视觉观感也是有差别的,所以前者的价格会高于后者。

Crystals are absolutely nothing over an ordered arrangement of molecules or atoms. Crystals are available in many different sizes and styles, and each has distinctive properties. The things they are created of determines how it'll variety.

包裹体常见有固相、固液气三相组合、空洞以及双晶、色带等。水晶中典型的同生包裹体有自形的锐钛矿、气液两相包体等。

⑤化学稳定�?非常好,在常温下仅溶解于氢氟酸,不溶解于其它各类酸、碱。在高温高压条件下可溶解于碳酸钠溶液中。

被主体水晶所捕获的包裹体。原生包裹体通常为固相,形态较规则。水晶中典型的原成包裹体有金红石、电气石、黄铁矿等,也会见到岩石碎屑或集合体。

Orthorhombic: These are rhombic prisms and dipyramids that resemble tetragons but without having sq. cross-sections.

水玉:中国最古老的称法叫水玉,意谓似水之玉,又说是 �?千年之冰所�?�?。唐代诗人温庭筠《题李处士幽居》写道:�?水玉簪头白角巾,瑶琴寂历拂轻�?”。水玉一词最早频繁出于《山海经》:�?又东三百里,日堂庭之�?…�?多水�?”;�?丹山出焉,东南流注于洛水,其中多水玉 ”;�?逐水出焉,北流注于渭,其中多水玉 ”。司马相如《上林赋》曰�?�?水玉磊河 �?。水晶得名水玉,古人是看�?�?其莹如水,其坚如�?�?的质地。

This crystal construction is answerable for the unique physical and chemical Homes of sodium chloride, including its high melting level, electrical conductivity, and talent to sort ionic bonds conveniently.

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