azimuth

Definitions:

  • The horizontal angular distance from a reference direction, usually the northern point of the horizon, to the point where a vertical circle through a celestial body intersects the horizon, usually measured clockwise. Sometimes the southern point is used as the reference direction, and the measurement is made clockwise through 360°.
  • The horizontal angle of the observer's bearing in surveying, measured clockwise from a referent direction, as from the north, or from a referent celestial body, usually Polaris.
  • The lateral deviation of a projectile or bomb.
  • In <em>astronomy</em>, an arc of the horizon intercepted between the meridian of a place and the vertical circle passing through the center of a celestial object. The azimuth and altitude of a star give its exact position in the sky.
  • The quadrant of an azimuth circle.
  • An arc of the horizon intercepted between the meridian of the place and a vertical circle passing through the center of any object
  • one of the great circles of the sphere intersecting each other in the zenith and nadir, and cutting the horizon at right angles.
  • None
  • a compass resembling the mariner's compass, but having the card divided into degrees instead of rhumbs, and having vertical sights; used for taking the magnetic azimuth of a heavenly body, in order to find, by comparison with the true azimuth, the variation of the needle.
  • a dial whose stile or gnomon is at right angles to the plane of the horizon.
  • an arc of the horizon, intercepted between the vertical circle passing through any object and the magnetic meridian. This is found by observing the object with an azimuth compass.
  • An <xref>arc</xref> of the <xref>horizon</xref> intercepted between the <xref>meridian</xref> of the place and a <xref>vertical</xref> circle passing through the center of any object; as, the azimuth of a star; the azimuth or bearing of a line surveying.
  • The quadrant of an <xref>azimuth circle</xref>.
  • the azimuth of a celestial body is the angle between the vertical plane containing it and the plane of the meridian
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