5 Easy Facts About Crystal Described
5 Easy Facts About Crystal Described
Blog Article
天然的水晶一般都会有絮状（绵绺），也就是大家俗称的瑕疵，这是液体水落石出和二氧化碳的小孔穴，而人工合成的水晶就不会有这样的特征。
Cite Even though each and every effort has become created to comply with citation design rules, there might be some discrepancies. Make sure you seek advice from the suitable design handbook or other sources For those who have any questions. Select Citation Design and style
These improvements include things like exotic structures with programmable lattice symmetries and very well-defined crystal habits, responsive materials that leverage the intrinsic Attributes of nucleic acids to control structures on desire, nanoparticle superlattices grown epitaxially from surfaces and colloidal crystals offering insights into gentle–make a difference interactions. Hunting forward, we obstacle the community to leverage the amazing structural Command afforded by crystal engineering with DNA to synthesize courses of practical materials that drive past what has actually been feasible with In a natural way developing crystalline components or Those people created by much more common methods.
Encyclopaedia Britannica's editors oversee issue spots during which they've got in depth expertise, irrespective of whether from many years of experience obtained by working on that content or through examine for an advanced degree. They create new articles and verify and edit articles been given from contributors.
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。
Not all crystals type in drinking water, but nearly all crystals variety precisely the same way, atoms occur jointly and turn into a uniformed cluster. The method might take as small as a couple of days to perhaps a thousand decades. Normal crystals that come from the Earth form the identical way.
水晶与高档宝石的净度要求有很大不同。高档宝石稀少罕见，所以一般人们普遍对高档宝石的净度不会过于苛求。而水晶的产量着实大得惊人，所以通常人们会要求水晶净度越高越好，尽量避免有较明显的内含物的水晶。
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。
Meanwhile, to be certain continued guidance, we have been exhibiting the location without having kinds and JavaScript.
Solids that have limited-assortment buy but deficiency long-variety purchase are referred to as amorphous. Virtually any material is usually created amorphous by fast solidification from the soften (molten state). This ailment is unstable, as well as sound will crystallize in time. If the timescale for crystallization is years, then the amorphous condition seems steady.
Single crystals of metals are comfortable and malleable, whilst polycrystalline metals are harder and more robust and tend to be more valuable industrially. Most polycrystalline components might be made into large solitary crystals after extended warmth treatment. In the past blacksmiths would warmth a piece of metallic to make it malleable: warmth will make several grains grow massive by incorporating smaller sized kinds. The smiths would bend the softened metallic into condition after which you can pound it awhile; the pounding would enable it to be polycrystalline all over again, escalating its power.
国家还并未给天然水晶提供一个等级划分的具体标准，水晶品种繁杂，每一品种都有他不同的评判标准。
水晶饰品越来越受到人们的喜爱。中国、日本、韩国、美国等国家的人们还对水晶球情有独钟，喜欢将它们摆在家里或办公室里，认为水晶球有灵性，能保平安，带来财运。不过天然水晶不像看起来那么晶莹剔透，它也有瑕疵，我们在选购饰品的时候要注意。此外，我们还要掌握水晶的评价依据、选购方法，这样可以帮助我们在琳琅满目的水晶饰品中选到心仪的水晶。
Sensible Vocabulary: related text and phrases Geology: mineralogy beneficiation crystalline deposit gemologist more info gemology gold dust graphite idiomorphic intercrystalline like gold dust idiom magnesium mineral nugget pyrite quasicrystal seam silicon unmined vermiculite vulcanicity See much more results » It's also possible to come across relevant terms, phrases, and synonyms while in the topics: