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Revision as of 14:06, 29 November 2008 by Laertes (talk | contribs) (Other Uses)
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Foam is a solid or liquid matrix filled with many gas bubbles. Due to its low density, most types of foam are good insulators. The external fuel tank of the Space Shuttle is insulated with a layer of foam. Other uses include sealants, bedding, consumer goods, and construction materials.

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