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closed surface |
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closed surface [¦klōzd ′sər·fəs] (mathematics) A surface that has no bounding curve. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| A look at thin coatings with a non-porous closed surface Amazingly, more than a hundred years ago, mathematicians proved that every closed surface in space is simply some version of a sphere, a doughnut surface--which they call a torus--or a torus with extra holes. In these equations, U is a scalar wave function, S is a closed surface containing a plane aperture A located in the xy-plane of a cartesian coordinate system as indicated in Fig. |
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