Evolute

An ellipse (red), its evolute (blue) and some parallel curves. Note how the parallel curves touch the evolute where they have cusps

In the differential geometry of curves, the evolute of a curve is the locus of all its centers of curvature. That is to say that when the center of curvature of each point on a curve is drawn, the resultant shape will be the evolute of that curve. The evolute of a circle is therefore a single point at its center.

单词	Radial curve
释义	Radial curve 英语百科 Evolute In the differential geometry of curves, the evolute of a curve is the locus of all its centers of curvature. That is to say that when the center of curvature of each point on a curve is drawn, the resultant shape will be the evolute of that curve. The evolute of a circle is therefore a single point at its center.
随便看	trimethyl trimellitate的意思 trimethyltriphenylcyclotrisiloxane的意思 trimethyltrithiophosphine的意思 trimethyltryptophane的意思 trimethyl tryptophane的意思 trimethyl urea的意思 trimethylurea的意思 trimethyl uric acid的意思 Trimethyluric acid的意思 trimethylvinylammonium hydroxide的意思 trimethyl xanthine的意思 trimethylxanthine的意思 trimethyl zymosterol的意思 trimethylzymosterol的意思 Trimetin的意思 trimetion的意思 trimetnaphan camsylate的意思 trimeton的意思 trimetoquinol的意思 trimetozine的意思 trimetre的意思 Trimetrexate的意思 Trimetrexate glucuronate的意思 Trimetrexate Hydrate的意思 Trimetrexate Monohydrate,Monoacetate的意思

Radial curve

Evolute