envelope of normals
Смотреть что такое "envelope of normals" в других словарях:
First order partial differential equation — In mathematics, a first order partial differential equation is a partial differential equation that involves only first derivatives of the unknown function of n variables. The equation takes the form: F(x 1,ldots,x n,u,u {x 1},ldots u {x n}) =0 … Wikipedia
Pedal curve — Geometric construction of the pedal of C with respect to P In the differential geometry of curves, a pedal curve is a curve derived by construction from a given curve (as is, for example, the involute). Let C be a given curve and P a fixed point… … Wikipedia
evolute — noun Date: circa 1736 the locus of the center of curvature or the envelope of the normals of a curve … New Collegiate Dictionary
Tractrix — (from the Latin verb trahere pull, drag ), or tractrice, is the curve along which a small object moves, under the influence of friction, when pulled on a horizontal plane by a piece of thread and a puller that moves at a right angle to the… … Wikipedia
Evolute — In the differential geometry of curves, the evolute of a curve is the locus of all its centers of curvature. Equivalently, it is the envelope of the normals to a curve. The original curve is an involute of its evolute. (Compare and… … Wikipedia
evolute — /ev euh looht / or, esp. Brit., /ee veuh /, n. Geom. the locus of the centers of curvature of, or the envelope of the normals to, another curve. Cf. involute (def. 5). [1720 30; < L evolutus (ptp. of evolvere to roll out, unfold, EVOLVE)] * * * … Universalium
evolute — ev•o•lute [[t]ˈɛv əˌlut[/t]] esp. brit. [[t]ˈi və [/t]] n. math. geom the locus of the centers of curvature of, or the envelope of the normals to, another curve Compare involute 5) • Etymology: 1720–30; < L ēvolūtus; see evolve … From formal English to slang
evolute — /ˈivəlut/ (say eevuhlooht), /ˈɛvə / (say evuh ) noun Geometry the locus of the centres of curvature of, or the envelope of the normals to, another curve (called the involute). {Latin ēvolūtus, past participle, rolled out} …
evolute — [ev′ə lo͞ot΄] n. [< L evolutus: see EVOLUTION] Geom. a curve that is the locus of the center of curvature of another curve (called the involute); the envelope of the perpendiculars, or normals, of the involute: see INVOLUTE … English World dictionary
ev|o|lute — «EHV uh loot», noun. Geometry. a curve that is the locus of the center of curvature of another curve (the involute), or the envelope of the normals to the latter; the curve from which an involute is formed by the unwrapping of a flexible and… … Useful english dictionary
