Angular aperture

Angular aperture
Angular An"gu*lar, a. [L. angularis, fr. angulus angle, corner. See {Angle}.] 1. Relating to an angle or to angles; having an angle or angles; forming an angle or corner; sharp-cornered; pointed; as, an angular figure. [1913 Webster]

2. Measured by an angle; as, angular distance. [1913 Webster]

3. Fig.: Lean; lank; raw-boned; ungraceful; sharp and stiff in character; as, remarkably angular in his habits and appearance; an angular female. [1913 Webster]

{Angular aperture}, {Angular distance}. See {Aperture}, {Distance}.

{Angular motion}, the motion of a body about a fixed point or fixed axis, as of a planet or pendulum. It is equal to the angle passed over at the point or axis by a line drawn to the body.

{Angular point}, the point at which the sides of the angle meet; the vertex.

{Angular velocity}, the ratio of anuglar motion to the time employed in describing. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • angular aperture — n the angle subtended at the principal focus of an optical system (as a microscope) by the diameter of its entrance for light …   Medical dictionary

  • Angular aperture — The angular aperture of a lens is the apparent angle of the lens aperture as seen from the focal point::a = 2 arctan left( frac {D/2} {f} ight)where :f is the focal length:D is the diameter of the aperture. Relation to numerical aperture In a… …   Wikipedia

  • angular aperture — apertūros kampas statusas T sritis fizika atitikmenys: angl. angular aperture; aperture angle vok. Aperturwinkel, m; Öffnungswinkel, m rus. апертурный угол, m pranc. angle d’ouverture, m; angle du champ, m …   Fizikos terminų žodynas

  • angular aperture — kampinė apertūra statusas T sritis fizika atitikmenys: angl. angular aperture; angular field vok. Winkelapertur, f rus. угловая апертура, f; угловое отверстие, n pranc. ouverture angulaire, f …   Fizikos terminų žodynas

  • angular aperture — noun : the angle subtended at the principal focus of an optical system by the diameter of its entrance pupil * * * angular aperture, the angular breadth of the light which an optical instrument transmits from the point viewed …   Useful english dictionary

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  • Angular aperture — Угловая апертура …   Краткий толковый словарь по полиграфии

  • Angular resolution — describes the resolving power of any image forming device such as an optical or radio telescope, a microscope, a camera, or an eye. Definition of terms Resolving power is the ability of the components of an imaging device to measure the angular… …   Wikipedia

  • Angular — An gu*lar, a. [L. angularis, fr. angulus angle, corner. See {Angle}.] 1. Relating to an angle or to angles; having an angle or angles; forming an angle or corner; sharp cornered; pointed; as, an angular figure. [1913 Webster] 2. Measured by an… …   The Collaborative International Dictionary of English

  • Angular distance — Angular An gu*lar, a. [L. angularis, fr. angulus angle, corner. See {Angle}.] 1. Relating to an angle or to angles; having an angle or angles; forming an angle or corner; sharp cornered; pointed; as, an angular figure. [1913 Webster] 2. Measured… …   The Collaborative International Dictionary of English

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