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helicoid |
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helicoid [′helĀ·ə‚kȯid] (invertebrate zoology) Of a gastropod shell, shaped like a flat coil or flattened spiral. (mathematics) A surface generated by a curve which is rotated about a straight line and also is translated in the direction of the line at a rate that is a constant multiple of its rate of rotation. 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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For centuries, the plane and the helicoid were the only known examples of infinite, unbounded minimal surfaces that don't fold back to intersect themselves. Augers: mounted, flighting: helicoid & sectional. Among the most significant patented designs are copper heatsinks, helicoid aluminum pins and liquid cooling systems for personal computers. |
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