evoluta
Sign in to savethumb|The blue parabola is the involute of the red curve. The red curve is the evolute of the blue parabola, and can be constructed as the locus of all centers of curvature of the blue parabola. right|thumb|The evolute of a curve (in this case, an ellipse) is the envelope of its normals.
Article · Español
Se llama evoluta de una curva "C" dada, al lugar geométrico de los centros de curvatura de "C".
Abstract from DBpedia / Wikipedia · CC BY-SA