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Re: Another Stupid Poll (Golden Rainbow)

Simcountry: Simcountry Bulletin Board  Re: Another Stupid Poll (Golden Rainbow)

Guido Nordhaus

Friday, March 04, 2005 - 09:42 am Click here to edit this post
Why make life hard? Consult Wikipedia:

"Sand is an example of a class of materials called granular matter. Sand is a naturally occurring, finely divided rock, comprising particles or granules ranging in size from 0.063 to 2 mm. An individual particle in this range size is termed a sand grain."
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"The most common constituent of sand in inland continental settings and non-tropical coastal settings, is silica (silicon dioxide), often in the form of quartz. However, the composition of sand varies according to local rock sources and conditions. Arkose is a sand or sandstone with considerable feldspar content which is derived from the weathering and erosion of a usually nearby granite. Much of the fine white sand found in coral reef settings, for example, is ground-up coral (limestone) that has passed through the digestion of the parrot fish. Some locations have sands that contain magnetite, clays, chlorite, glauconite, or gypsum. Sands rich in magnetite are dark to black in color. The chlorite - glauconite bearing sands typically are a green color. The gypsum sand dunes of the White Sands National Monument in New Mexico are famous for their white color. Sand deposits in some areas contain garnets and other resistant minerals including some gemstones."
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"Dry, loose sand has an average density of 1442 kg/m3."
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"The study of sand is called arenology."

My favourite Sand is "singing sand", btw. A sound at about 450Hz, emitted because of shear stress.

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