Crystal for Dummies
Crystal for Dummies
Blog Article
This idea applies equally in a single, two, and three-dimensional Areas. Your complete crystal lattice can be manufactured by regularly reproducing the sample from the device mobile 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。
A basic strategy in crystal structures may be the device cell. It's the smallest device of volume that permits similar cells being stacked together to fill all House. By repeating the pattern from the unit cell over and over in all directions, the whole crystal lattice might be produced. A dice is The only example of a unit mobile. Two other examples are shown in Figure 1. The first may be the device cell for just a face-centred cubic lattice, and the next is for just a overall body-centred cubic lattice. These buildings are described in the following paragraphs.
第一种是“全包裹体”，在水晶结晶的时候把这些物质包裹在晶体里面，这类包裹体所形成的各种景象，大多保持了水晶结晶时的原状，也就是说保存了几亿年的原状，极少受到自然环境的影响。
25If you're a Billy Crystal fan, you can appreciate this movie.如果你是比利·克里斯特尔的影迷，你就会喜欢这部电影。《柯林斯英汉双解大词典》
Lattices might have a person lattice level per mobile or multiple, yielding a total of fourteen Bravais crystal lattice varieties. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the three-dimensional array created by a set of discrete factors.
⑩、雷射内雕：以计算机辅助激光设备在水晶对象中进行三维图案的成型，艺术效果好，可以任意表达各类图案，图形，达到逼真效果
As a warm Answer cools or a saturated Alternative evaporates, particles draw near enough for chemical bonds to variety. Crystals may kind from deposition straight from the gasoline stage. Liquid crystals have particles oriented in an organized manner, like stable crystals, but can easily flow.
In the meantime, to be sure continued assist, we've been exhibiting the website without the need of variations and JavaScript.
Crystals with noticeable flat faces are identified as euhedral crystals, while All those missing outlined faces are called anhedral crystals. Crystals consisting of ordered arrays of atoms that aren't often periodic are called quasicrystals.
Look through cryptosporidiosis cryptosporidium cryptozoologist cryptozoology crystal crystal ball crystal distinct idiom crystal lattice BETA copyright #randomImageQuizHook.filename #randomImageQuizHook.isQuiz Examination your vocabulary with our exciting graphic quizzes
The sodium chloride crystal lattice is characterized via the shut packing of the good sodium ions and unfavorable chloride ions. Every single sodium ion is surrounded by six chloride ions, and each chloride ion is surrounded by six sodium ions, making a highly secure and symmetrical framework.
水精：水晶为何称为水精，《广雅》有巧解：�?水之精灵�?”；李时珍则说：�?莹洁晶光，如水之精英 ”。细加考究，此称还蕴含浓厚的宗教意味呢。水精一名，最初见于佛书，后汉支曜翻译的《具光明定意经》说：�?其所行道，色如水�?�?。
Binary crystals are found in quite a few buildings. Some pairs more info of elements type more than one construction. At area temperature, cadmium sulfide may possibly crystallize possibly from the zinc blende or wurtzite construction. Alumina also has two possible constructions at space temperature, α-alumina (corundum) and β-alumina. Other binary crystals exhibit different constructions at distinct temperatures. Amongst the most advanced crystals are those of silicon dioxide (SiO2), that has 7 distinctive constructions at numerous temperatures and pressures; the commonest of such structures is quartz.