How Crystal can Save You Time, Stress, and Money.
How Crystal can Save You Time, Stress, and Money.
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天然的水晶一般都会有絮状（绵绺），也就是大家俗称的瑕疵，这是液体水落石出和二氧化碳的小孔穴，而人工合成的水晶就不会有这样的特征。
Bismuth (Bi) appears to generally be a metallic, but the volume of electrons accessible for electrical conduction is analogous to that of semiconductors. In reality, bismuth is called a semimetal. Molecular solids tend to be crystals fashioned from molecules or polymers. They may be insulating, semiconducting, or metallic, dependant upon the variety of molecules in the crystal. New molecules are constantly staying synthesized, and lots of are made into crystals. The volume of various crystals is big.
These innovations involve exotic buildings with programmable lattice symmetries and properly-outlined crystal patterns, responsive products that leverage the intrinsic Attributes of nucleic acids to control buildings on demand from customers, nanoparticle superlattices developed epitaxially from surfaces and colloidal crystals offering insights into gentle–make any difference interactions. Seeking forward, we obstacle the Local community to leverage the extraordinary structural Command afforded by crystal engineering with DNA to synthesize classes of purposeful products that thrust further than what has been doable with Normally transpiring crystalline materials or All those created by extra common strategies.
Encyclopaedia Britannica's editors oversee subject matter parts where they've got substantial information, regardless of whether from yrs of working experience gained by focusing on that material or through examine for an advanced degree. They publish new written content and verify and edit content received from contributors.
看抛光：抛光的好坏直接影响到水晶制品的身价。抛光分为软抛光与硬抛光。
Encyclopaedia Britannica's editors oversee matter locations by which they've extensive expertise, regardless of whether from yrs of encounter received by focusing on that content material or by way of review for an advanced degree. They generate new articles and validate and edit information gained from contributors.
时尚的收藏爱好者喜欢收藏天然水晶，却常常因为在市场上面对大量的合成水晶看走了眼。市面上的水晶：
26Some of the finest drinking Eyeglasses are created from direct crystal.一些最精致的酒杯是用铅晶质玻璃制成的。《柯林斯英汉双解大词典》
Quite a few crystals behave like butter in that they are challenging at reduced temperatures but soft at better temperatures. They can be termed solids in the slightest degree temperatures under their melting level. A possible definition of the sound is undoubtedly an item that retains its condition if left undisturbed. The pertinent situation is just how long the item retains its form. A very viscous fluid retains its shape for an hour or so although not a calendar year. A strong have to keep its form more time than more info that.
Solids that have brief-array order but deficiency very long-selection purchase are known as amorphous. Practically any substance may be built amorphous by swift solidification from your melt (molten condition). This ailment is unstable, along with the strong will crystallize in time. In the event the timescale for crystallization is decades, then the amorphous point out appears secure.
15The trick to a superb thermoelectric content is a crystal composition where electrons can flow freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。
水晶形成后由于外力作用或某种人为原因使水晶产生大的裂隙或裂纹，这种裂纹有大有小，对水晶的影响也有大小之分。
Crystals are categorised on the whole classes, including insulators, metals, semiconductors, and molecular solids. A single crystal of the insulator is often clear and resembles a piece of glass. Metals are shiny Until they have got rusted. Semiconductors are sometimes shiny and in some cases clear but are in no way rusty. Many crystals could be categorised as an individual form of reliable, while others have intermediate behaviour. Cadmium sulfide (CdS) may be geared up in pure kind and is an excellent insulator; when impurities are extra to cadmium sulfide, it results in being a fascinating semiconductor.
21You all know the way any time you have a crystal prism and go a beam of daylight as a result of it, you receive a spectrum, which seems like a constant band of rainbow hues.