Not known Details About Crystal
Not known Details About Crystal
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水晶表面坑洼的地方，有的深，有的浅，这是水晶在成长过程中自然形成的，并非是人为造成的损伤。缺陷位置本来包有其他矿物晶体，由于包裹体和水晶结合部位的结合力不强，当表面抛光时，矿体脱落，留下空位。这种缺陷在绿幽灵、钛晶、金发晶上都比较常见。
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。
A crystal structure focuses on how the atoms are arranged inside the crystal. Nevertheless, crystallographers are interested in the overall condition and sizing of your crystal together with its exterior attributes. To perform this, they have to learn about the crystal program.
Substantial crystals of diamond are valuable gemstones. The crystal has other attention-grabbing Qualities; it has the very best seem velocity of any reliable and is the best conductor of warmth. Aside from diamond, the other frequent method of carbon is graphite, and that is a layered substance. Each individual carbon atom has three coplanar close to neighbours, forming an arrangement called the honeycomb lattice. 3-dimensional graphite crystals are obtained by stacking equivalent layers.
水胆水晶，包括气态，液态，固态，有时候可以同时多态并存，无色居多，个别情况下可见红色，绿色，黄色，蓝色，黑色等。
发晶，包括钛晶，铜顺发，绿发晶，黑发晶，银发晶，杂色发晶，其中钛晶最珍贵，少数钛晶价值可比钻石，红宝石和蓝宝石以及祖母绿。
Crystals seem distinctive from many other rocks and minerals, but �?barring a few Specific circumstances �?almost all minerals conceal a crystalline structure beneath the floor.
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。
Q.four. What is the distinction between atomic composition and crystal framework? Ans. The primary difference between atomic construction and crystal composition lies inside their definitions: atomic composition refers to how atoms are structured inside of a solitary molecule or perhaps a cluster of molecules, While crystal construction issues the specific arrangement of atoms inside of a stable material.
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。
One crystals of metals are soft and malleable, when polycrystalline metals are more durable and more powerful and tend to be more beneficial industrially. Most polycrystalline elements may be produced into massive single crystals following prolonged warmth cure. In past times blacksmiths would warmth a bit of metal to really make it malleable: heat makes some grains develop big by incorporating smaller types. The smiths would bend the softened steel into form after which you can pound it awhile; the pounding would allow it to be polycrystalline once again, raising its strength.
The sodium chloride crystal lattice is characterised by the near packing of the favourable sodium ions and destructive chloride ions. Each individual sodium ion is surrounded by six chloride ions, and each chloride ion is surrounded by 6 sodium ions, making a very steady and symmetrical structure.
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。
Tetragonal �?Characterised by 3 mutually perpendicular axes, two of which might be equal in size, though the website third is for a longer period or shorter and perpendicular to another two.