azimuth

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azimuth

(ăz`əməth), in astronomy, one coordinate in the altazimuth coordinate systemaltazimuth coordinate system
or horizon coordinate system,
astronomical coordinate system in which the position of a body on the celestial sphere is described relative to an observer's celestial horizon and zenith.
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. It is the angular distance of a body measured westward along the celestial horizon from the observer's south point.

azimuth

(az -ă-mŭth) See horizontal coordinate system.

Azimuth

(religion, spiritualism, and occult)

One can locate a specific celestial object in several ways, most of which involve specifying two coordinates. The azimuth is one of the coordinates of such a system. Although the notion of azimuth is basically simple, it is not simple to explain. Imagine that a group of people are looking at a star. From where they are standing, they can measure the angle between the horizon and the star. This gives them one coordinate in terms of angular distance (called the altitude, for obvious reasons). Then imagine a geometric plane that, like some kind of gigantic wall, cuts through Earth, intersecting the north and south poles, the place where they are standing, and the point directly over their heads (the zenith). They then measure another angle with their surveying instrument, this time between the imaginary wall and the star. This angular distance gives them the azimuth.

Sources:

Filbey, John, and Peter Filbey. The Astrologer’s Companion. Wellingborough, Northamptonshire, UK: Aquarian Press, 1986.
Gettings, Fred. Dictionary of Astrology. London: Routledge & Kegan Paul, 1985.

azimuth

[′az·ə·məth]
(astronomy)
Horizontal direction of a celestial point from a terrestrial point, expressed as the angular distance from a reference direction, usually measured from 0° at the reference direction clockwise through 360°.
(engineering)
In directional drilling, the direction of the face of the deviation tool with respect to magnetic north.
(geodesy)
Horizontal direction on the earth's surface.

azimuth

azimuth
In plane surveying, a horizontal angle measured clockwise from north meridian to the direction of an object or fixed point.

azimuth

azimuthclick for a larger image
azimuth
azimuthclick for a larger image
i. A direction expressed as a horizontal angle, usually in degrees, measured clock-wise from a reference datum or direction, usually north. The azimuth will be a true zenith, grid azimuth, magnetic azimuth, or relative azimuth, depending upon which reference datum is used.
ii. The arc of the observer's rational horizon or the angle at his zenith contained between the observer's celestial meridian and the vertical circle through that body. It is the distance, measured in degrees, along the horizon westward from the south point of the horizon to the place where the vertical circle through an object intersects the horizon.
iii. As it pertains to aerial photography, the azimuth of a photograph is the clock-wise horizontal angle measured about the ground nadir point from the ground survey north meridian to the principal plane of the photograph. Also called azimuth of the principal plane.

azimuth

Astronomy navigation the angular distance usually measured clockwise from the north point of the horizon to the intersection with the horizon of the vertical circle passing through a celestial body

azimuth

The trajectory of an angle measured in degrees going clockwise from a base point. A disk azimuth alignment test checks for the correct positioning of the read/write head to the track.
References in periodicals archive ?
It is interesting to note that we mainly considered the evolution of the temperature profiles for axial and azimuthally multiple swirling jets in five separate configurations designated as A, B, C, D and E.
17 shows the azimuthally averaged secondary circulation and potential temperature derived from the tail Doppler radar and dropsondes on 22 October using a Spline Analysis at Mesoscale Utilizing Radar and Aircraft Instrumentation (SAMURAI; Bell et al.
Basu, "Analysis of an azimuthally periodic vane-loaded cylindrical waveguide for gyro-travelling wave tube," Int.
This resonance, combined with a very slight inclination in Galatea's orbit, acts to keep particles in the Adams ring confined to a tight ribbon and create the azimuthally clumped ring arcs (S&T: February 1992, page 127).
Azimuthally averaged radius-pressure cross sections of tangential wind and 8 anomalies have been computed based on the dropsondes deployed during the four flights over Hurricane Joaquin (Fig.
1D-WAXD intensity profiles can be obtained by integrating 2D-WAXD patterns azimuthally.
Squint SAR has a potential to provide the information about the target through the measurement of the azimuthally angle dependence of backscatter.
Their elements are elementary Huygens sources linearly polarized along y and are radially and azimuthally spaced by 0.
1) The axisymmetry of hurricanes in this study is understood in the sense of the zero-order linearization, in which all asymmetric forcings can be parameterized in terms of azimuthally averaged variables (Willoughby 1979).
In contrast, due to that wireless base stations need azimuthally omni-directional antennas with sufficient power and sufficient beam width in the elevation plane so as to cover as wide an area as possible, there has been increased interest in using uniform circular arrays (UCAs).