Unduloid

== Properties == One interesting property of the unduloid is that the mean curvature is constant. In fact, the mean curvature across the entire surface is always the reciprocal of twice the major axis length: 1/(2a). Also, geodesics on an unduloid obey the Clairaut relation, and their behavior is therefore predictable. ...
Found on http://en.wikipedia.org/wiki/Unduloid

unduloid

A member of a family curves that is formed by films or liquid drops suspended between certain boundaries. Examples of unduloids are seen on a spider web when viewed through a microscope. They consist of blobs of viscous liquid, which make up the sticky part of the web and are mostly gathered into a ...
Found on http://www.daviddarling.info/encyclopedia/U/unduloid.html
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