Crystal for Dummies
Crystal for Dummies
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This concept applies equally in one, two, and 3-dimensional Areas. The complete crystal lattice is usually made by consistently reproducing the pattern from the device cell in all directions.
按照透明度指标，水晶越透明，价格越高，好的透明的水晶加工出的成品晶莹剔透、光辉耀眼。透明度高的水晶能提升颜色的艳丽，否则显得呆板无灵性。光学水晶要求全透明、无双晶、无杂质。工艺水晶要求透明、少裂、少瑕疵。熔炼水晶要求透明，可有较多裂纹。三者价值依次降低，熔炼水晶只能作为熔炼水晶玻璃的原料。在工艺水晶中，晶体较大的，可用来做水晶眼镜和雕刻高档工艺品，因而价格较高。
These developments consist of unique buildings with programmable lattice symmetries and nicely-described crystal practices, responsive supplies that leverage the intrinsic Homes of nucleic acids to govern constructions on demand from customers, nanoparticle superlattices grown epitaxially from surfaces and colloidal crystals that supply insights into light-weight–subject interactions. Wanting forward, we challenge the Neighborhood to leverage the extraordinary structural Command afforded by crystal engineering with DNA to synthesize classes of functional supplies that press over and above what has become doable with In a natural way happening crystalline resources or All those created by additional regular tactics.
We have published about more than three hundred stones inside the mineral kingdom! Examine Every single stone's unique origin, background, and energies beneath.
2She was wearing a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
第二种是“半包裹体”，在水晶结晶以后，由于受到地球引力的影响而产生的裂隙，晶体外的一些物质通过水晶的裂隙渗透到水晶内部，一部分包裹于水晶之中另一部分露于水晶之外。我们可以看到物质渗进水晶的裂迹，常被称为“通道”，这种包裹体所形成的景象相对地较受自然环境和时间的影响，相应的价值也比较�?。
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损伤是指水晶由于加工或不小心摔掉、碰撞等原因，人为造成的损坏。它可以是破口，也可以是凹坑等。
水晶常以晶簇、晶洞形式产出，其中水晶洞一般存在于由火山喷发而形成的巨厚熔岩流层的火成岩与玄武岩中。火山喷发时所含的气体或热水溶蚀等作用导致岩层中出现大量的孔隙，当富含硅质矿物的流体进入较薄的熔岩孔隙中，且温、压条件合适时将结晶沉淀出水晶等矿物。
[ C/U ] clear glass of high quality, normally with its area Minimize into styles that replicate light
There's two this kind of achievable periodic arrangements. In Each and every, the 1st layer has the atoms get more info packed into a plane-triangular lattice in which each and every atom has 6 fast neighbours. Determine two shows this arrangement to the atoms labeled A
Orthorhombic: These are typically rhombic prisms and dipyramids that resemble tetragons but without having sq. cross-sections.
压电性：水晶晶体受到压力时会产生电荷；反之，受到电压作用时，晶体会产生频率很高的振动。水晶具有可使压力与电荷相互转移的性能，称压电性。
水晶观赏石在形态、质地、内部特征等方面往往十分奇异。大自然有无限风光，都可以在包裹体水晶种找到缩影。