Not known Details About Crystal
Not known Details About Crystal
Blog Article
轴性、光性:一轴晶正光性。正交偏光下所看到的一轴晶干涉图是独特的,其黑十字臂未达中心,形成中空的图案,俗称牛眼干涉图。中心部分通常为淡绿色或淡粉色。
①压电效�?在机械力(压力或拉�?作用下,水晶单晶体的两端会产生电荷,其电量相等但符号相反。在工业上,无色、无缺陷、不具双晶的水晶常被用来作压电石英片。
看做工:水晶制品加工过程分为两种,即磨工和雕工。如水晶项链、手链、耳环等属于研磨品;观音像、内画鼻烟壶等属于雕刻品。
养殖晶:养殖晶是指,用天然水晶做种子,然后赋予天然水晶生长的高压条件,养殖器中有富含二氧化硅的分子。然后二氧化硅分子围绕天然水晶种生长,这样的水晶成分(分子式)与天然水晶是一摸一样的,唯一有差别的是,这样的水晶磁场作用没有天然水晶强。
. These four structures comprise most of the binary crystals with equivalent quantities of cations and anions.
Encyclopaedia Britannica's editors oversee subject spots wherein they may have in depth know-how, regardless of whether from a long time of expertise gained by focusing on that content or by using analyze for a sophisticated degree. They create new content material and validate and edit content material obtained from contributors.
石英:《广雅》称水晶叫石英,色白如莹者又叫白。为附的异形字。司马相如《子虚赋》就�?�?雌黄�?�?之句。苏林解释:�?�?,白石英�?”。
To be a incredibly hot Alternative cools or possibly a saturated Alternative evaporates, particles attract near sufficient for chemical bonds to sort. Crystals might also form from deposition straight from the fuel section. Liquid crystals possess particles oriented in an arranged manner, like stable crystals, however can circulation.
仿制钛晶树水晶:钛晶是水晶里价格最昂贵的,造假者当然也不会放过这么好的产品。天然的环境下,在水晶里能生长个像树一样的钛晶,完全是可能的,只是这样的货很少,那我们的造假专家是如何做的呢,白水晶底下打个洞,激光打点成板状的钛晶进去,就这样这块水晶的身价就能飙升几十倍。往往有的钛晶戒面,会采用将钛晶部位割成板状,与圆面的水晶粘合的方法来制作。
颜色:无色,浅至深的紫色,浅黄、中至深黄色,浅至深褐、棕色,绿至黄绿色,浅至中粉红。
用手去触摸水晶,天然水晶通常温度要比人造水晶的要凉的多;用眼观察,天然水晶通常有棉絮状的包裹体,这个是人造水晶所没有的。
You can find other minerals and molecules that will form these crystal lattices. Snowflakes certainly are a traditional example of a around symmetric and geometrically patterned framework from ice crystals, more info and gemstones of all types are typically crystals.
Crystals are labeled usually categories, which include insulators, metals, semiconductors, and molecular solids. A single crystal of an insulator will likely be clear and resembles a piece of glass. Metals are shiny Unless of course they've rusted. Semiconductors are occasionally shiny and sometimes transparent but are under no circumstances rusty. Quite a few crystals can be labeled as one kind of good, while others have intermediate conduct. Cadmium sulfide (CdS) is often prepared in pure variety and is a superb insulator; when impurities are extra to cadmium sulfide, it will become an interesting semiconductor.
⑥白色的包裹体有蚀变的绿泥石、云母、愈合裂隙、水晶、方解石、透闪石等。