evolute and involute

evolute and involute
Смотри Эволюта и эвольвента.

Энциклопедический словарь по металлургии. — М.: Интермет Инжиниринг. . 2000.

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  • 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

  • Involute — In the differential geometry of curves, an involute of a smooth curve is another curve, obtained by attaching an imaginary taut string to the given curve and tracing its free end as it is wound onto that given curve; or in reverse, unwound. It is …   Wikipedia

  • involute — adj. & n. adj. 1 involved, intricate. 2 curled spirally. 3 Bot. rolled inwards at the edges. n. Geom. the locus of a point fixed on a straight line that rolls without sliding on a curve and is in the plane of that curve (cf. EVOLUTE). Etymology:… …   Useful english dictionary

  • Эволюта и эвольвента — [evolute and involute] понятия дифференциальной геометрии: множество центров кривизны плоской кривой называется эволютой этой кривой; кривая по отношению к своей эволюте называется эвольвентой …   Энциклопедический словарь по металлургии

  • Trigonocerataceae — Temporal range: U Devonian U Triassic Scientific classification Kingdom: Animalia Phylum: Mollusca Class …   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

  • Nautilus — For other uses, see Nautilus (disambiguation). Nautilus Temporal range: Triassic–Present[1] …   Wikipedia

  • Centroceratidae — Temporal range: M Devonian L Permian Scientific classification Kingdom: Animalia Phylum: Mollusca Class …   Wikipedia

  • Nautilina — Temporal range: Late Triassic Recent Scientific classification Kingdom: Animalia Phylum: Mollusca Class …   Wikipedia

  • Cravenoceratidae — Scientific classification Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda …   Wikipedia


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