17These rings are indicative of the crystal framework of nickel and will be discussed only by invoking wavelike Homes of sunshine.这些光圈表明了了镍的晶体结构，而且只能通过光线中波的特征来解释。
A further exciting, and tasty, experiment is to form huge crystals using sugar. By heating sugar with drinking water and after that allowing this Option evaporate on sticks, you'll be able to form rock sweet from sugar crystals!
4Without a crystal ball, It is really impossible to convey wherever we will be upcoming calendar year.不用水晶球预卜未来，我们说不准明年处境如何呀。《牛津词典》
Insert to term list Include to term record C2 [ U ] transparent glass of incredibly premium quality, ordinarily with its surface area Lower into sensitive designs
Fig. 4: Creating blocks with unique shapes and floor chemistries immediate the development of unique crystal symmetries.
你们都知道，拿起一个水晶棱镜，让一束阳光通过它，就会得到一个光谱，看起来就像一条连续的彩虹色带。
30Three times went earlier, and I used to be shocked to check out it all over again: each of the openings ended up sewed up by thin and white thread plus they seemed similar to the ice crystal on winter's branches while in the north.
如果水晶内部杂质中有传说中人物的造型，如佛、星座、生肖等价值可能要高于同等颜色和净度的水晶。
第三种是“皮景”，因某些其他的矿物与水晶体共生，或由于其他的物质侵蚀而依附于水晶表面，或者是水晶受自然环境的影响，在水晶表面出现蚀象，形成了一些景象或图案，这种景观存在于水晶表面。
The definition of the good appears evident; a strong is normally considered being hard and agency. On inspection, having said that, the definition becomes fewer uncomplicated. A cube of butter, by way of example, is difficult following becoming saved in a very fridge and it is clearly a good. Immediately after remaining around the kitchen counter for a day, precisely the same dice gets quite gentle, and it truly is unclear When the butter really should nonetheless be regarded a solid.
The basic units of solids are possibly atoms or atoms which have put together into molecules. The electrons of the atom shift in orbits that type a shell framework round the nucleus. The shells are filled in a systematic purchase, with Just about every shell accommodating only a little number of electrons. Distinct atoms have distinct numbers of electrons, which happen to be dispersed inside a attribute Digital framework of crammed and partially filled shells.
You will find other minerals and molecules that may sort these crystal lattices. Snowflakes can be a traditional illustration of a around symmetric and geometrically patterned construction from ice crystals, and gemstones of all kinds are generally crystals.
Crystals more info are categorised normally classes, which include insulators, metals, semiconductors, and molecular solids. An individual crystal of an insulator is frequently transparent and resembles a bit of glass. Metals are shiny Except if they may have rusted. Semiconductors are occasionally shiny and at times clear but are never rusty. Quite a few crystals may be classified as a single type of strong, while others have intermediate behaviour. Cadmium sulfide (CdS) might be ready in pure form and is a wonderful insulator; when impurities are included to cadmium sulfide, it results in being a fascinating semiconductor.
Binary crystals are found in lots of structures. Some pairs of elements kind more than one structure. At room temperature, cadmium sulfide could crystallize possibly inside the zinc blende or wurtzite structure. Alumina also has two possible constructions at space temperature, α-alumina (corundum) and β-alumina. Other binary crystals exhibit different constructions at different temperatures. One of the most intricate crystals are those of silicon dioxide (SiO2), which has 7 diverse structures at numerous temperatures and pressures; the commonest of those buildings is quartz.