circular arc
41circular error — noun : the error in a timepiece resulting from variations in extent of the arc described by a pendulum * * * 1. Horol. loss of isochronism in a pendulum moving through circular arcs of different sizes: sometimes avoided by causing the pendulum to …
42arc of contact — the portion of a circular surface that is in contact with another surface (as that between a belt and a pulley); specifically : the arc on a toothed gear between the point where the teeth first make contact with another gear wheel and the point… …
43circular sector — noun the portion of a circle enclosed by two radii and an arc …
44arc tangent — noun the inverse function of the tangent; the angle that has a tangent equal to a given number • Syn: ↑arctangent, ↑arctan, ↑inverse tangent • Hypernyms: ↑trigonometric function, ↑circular function …
45Nastapoka arc — The Nastapoka arc is shown near the top, left portion of the province of Quebec (in red). The Nastapoka arc is a geological feature located on the southeastern shore of Hudson Bay, Canada. It is a near perfectly circular arc, covering more than… …
46or Circular letter — Circular Cir cu*lar, a. [L. circularis, fr. circulus circle: cf. F. circulaire. See {Circle}.] [1913 Webster] 1. In the form of, or bounded by, a circle; round. [1913 Webster] 2. repeating itself; ending in itself; reverting to the point of… …
47Supralateral arc — A supralateral arc is a rare halo, an optical phenomenon often confused with the indeed infrequently appearing 46° halo. Distinguishing between the two is furthermore difficult as supralateral arcs typically only appears in fragments while the… …
48Tangent of an arc — Tangent Tan gent, n. [L. tangens, entis, p. pr. of tangere to touch; akin to Gr. ? having seized: cf. F. tangente. Cf. {Attain}, {Contaminate}, {Contingent}, {Entire}, {Tact}, {Taste}, {Tax}, v. t.] (Geom.) A tangent line curve, or surface;… …
49Subtended arc — In geometry, an arc subtended by an angle is a curve whose endpoints are on the angle s two rays. The precise meaning varies with the context. For example, one may speak of the arc of a circumference subtended by an angle whose vertex is a point… …
50uniform circular motion — Motion of a particle moving at a constant speed on a circle. Though the magnitude of the velocity of such an object may be constant, the object is constantly accelerating because its direction is constantly changing. At any given instant its… …
