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Gaseous diffusion - Wikipedia, the free encyclopedia (263 words) |
 | Gaseous diffusion is a technology used to produce enriched uranium by forcing gaseous uranium hexafluoride through semi-permeable membranes. |
| Gaseous diffusion was one of several uranium isotope separation technologies developed as part of the Manhattan Project. |
| Large gaseous diffusion plants were constructed by the United States of America, the Soviet Union (including a plant now in Kazakstan), the United Kingdom, France and China. |
| MSN Encarta - Diffusion (791 words) |
| The rate of diffusion is also proportional to a specific property of the substance, which in the case of heat or electricity is called conductivity; in the case of matter, this property is called diffusivity or diffusion coefficient (see Conductor, Electrical; Heat; Resistance). |
| In the case of gases, this average speed is greater for smaller molecules, in proportion to the square root of the molecular weight, and is greatly increased by rise in temperature. |
| Metallic thorium, for example, diffuses rapidly through metallic tungsten at temperatures around 2000° C (3632° F); the operation of certain vacuum tubes is based on this diffusion. |
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