# Definition of Parabolic spiral. Meaning of Parabolic spiral. Synonyms of Parabolic spiral

Here you will find one or more explanations in English for the word Parabolic spiral. Also in the bottom left of the page several parts of wikipedia pages related to the word Parabolic spiral and, of course, Parabolic spiral synonyms and on the right images related to the word Parabolic spiral.

## Definition of Parabolic spiral

Parabolic spiral
Parabolic Para*bol"ic, Parabolical Para*bol"ic*al, a. [Gr. paraboliko`s figurative: cf. F. parabolique. See Parable.] 1. Of the nature of a parable; expressed by a parable or figure; allegorical; as, parabolical instruction. 2. [From Parabola.] (Geom.) (a) Having the form or nature of a parabola; pertaining to, or resembling, a parabola; as, a parabolic curve. (b) Generated by the revolution of a parabola, or by a line that moves on a parabola as a directing curve; as, a parabolic conoid. Parabolic conoid, a paraboloid; a conoid whose directing curve is a parabola. See Conoid. Parabolic mirror (Opt.), a mirror having a paraboloidal surface which gives for parallel rays (as those from very distant objects) images free from aberration. It is used in reflecting telescopes. Parabolic spindle, the solid generated by revolving the portion of a parabola cut off by a line drawn at right angles to the axis of the curve, about that line as an axis. Parabolic spiral, a spiral curve conceived to be formed by the periphery of a semiparabola when its axis is wrapped about a circle; also, any other spiral curve having an analogy to the parabola.

## Meaning of Parabolic spiral from wikipedia

- A Fermat's spiral or parabolic spiral is a plane curve named after Pierre de Fermat. Its polar coordinate representation is given by r = ± a φ , φ ≥ 0...
- geometry: Parabolic coordinates Parabolic cylindrical coordinates parabolic Möbius transformation Parabolic geometry (disambiguation) Parabolic spiral Parabolic...
- list of spirals includes named spirals that have been described mathematically. Catherine wheel (firework) List of spiral galaxies Parker spiral Spirangle...
- We first treat the non-parabolic case, for which there are two distinct fixed points. Non-parabolic case: Every non-parabolic transformation is conjugate...
- A track transition curve, or spiral ea****t, is a mathematically-calculated curve on a section of highway, or railroad track, in which a straight section...
- device vertically (planetary mixers), or by rotating the mixing container (spiral mixers).[citation needed] The mixer with rotating parts was patented in...
- {\displaystyle {\dot {u}}=0} (for more details, see also Reaction–diffusion and Parabolic partial differential equation). In physiology, a refractory period is...
- area within an Archimedean spiral. Blaise Pascal subsequently used polar coordinates to calculate the length of parabolic arcs. In Method of Fluxions...
- family of curves called loxodromes. Each loxodrome spirals infinitely often around each pole. A parabolic element of SL(2,C) is P 4 = [ 1 α 0 1 ] {\displaystyle...
- area of a spiral. His other mathematical achievements include deriving an accurate approximation of pi; defining and investigating the spiral that now...