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#3 |
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Silicon crystal - our computers wouldn't exist without them.
Sugar also crystalises. Crystals are pretty. I used to make them when I was a kid. The big one is copper sulphate, but there are others. Other than diamonds - which aren't really precious stones - all these other gems are crystals as well. Ruby, sapphire, emerald, topaz, garnet, etc., etc. |
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#7 |
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#8 |
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Originally posted by Lancer
Ages ago I opened a bookstore in my home here in Oregon. A really hot chick wafted in, spinning around with arms extended... She saw me behind my counter and grinned and wafted over. "You should sell crystals here, the energy is really good" Then waited expectantly. I asked what crystals are for and it turn out that there's a vortex here in Oregon and people take crystals and bury them in the forest somewhere, leave them for a while then dig them up and absorb the energy from them. I explained that this was a book store... That's not the way to treat a really hot babe. ![]() Say something like, "The energy must have brought you to me." ![]() |
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#10 |
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Basically, a crystal is a regular arrangement of atoms or molecules in a solid. A range of substances, mostly those consisting of ions or small molecules, arrange themselves in crystalline form when they are solids. In most cases, the structure is microcrystalline, which means the size of a single crytal in the solid is in the micrometer range with large variations. (contrasting this with petroleum is a bit comparing apples to oranges).
As mentioned, sugar, salts, metals and many other inorganic compounds are in a (micro)crystalline state. But when you use them, you aren't normally interested in the crystalline state. At least superficially - for metals, the exact crystalline state and the type of imperfections make for most of the mechanical properties. The traditional way of hardening steel is mostly changing crystalline states and structures. All hard/abrasive substances I know are crystalline (diamond, corundum, boron nitride, boron carbide, ...) Semiconductor devices (electronics or lasers) are mostly made on single crystals - one of the main reasons is that their electrical properties are far easier to predict and design. Also some optical devices build on special properties which are only found in some crystals. Your LCD display contains liquid crystals, which are liquids where the molecules have shapes which prefer to aggregate in more or less crystal like structures (and even may be derived from petroleum). And, no, "crystal glass" is not crystalline. |
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#11 |
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#13 |
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Originally posted by Zkribbler
Lured in young hippie women from the Oregon woods looking for...er...energy?? ![]() |
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