prime vertical


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prime vertical

The vertical circle that passes through an observer's zenith at right angles to the meridian and intersects the horizon at the east and west points (see cardinal points).

Prime Vertical

(religion, spiritualism, and occult)

The prime vertical is the great circle that intersects the east point, the west point, the nadir, and the zenith at any given point on Earth. It is perpendicular to both the meridian and the horizon. Some systems of house division utilize this great circle as their primary point of reference, deriving the house cusps by dividing the prime vertical into 12 equal subdivisons.

Prime Vertical

 

the great circle of the celestial sphere that passes through the zenith and the eastern and western points on the horizon. The plane of the prime vertical is perpendicular to the plane of the horizon and the plane of the celestial meridian. All heavenly bodies, which pass through the prime vertical as a result of the diurnal motion, intersect the prime vertical at the same velocity with respect to altitude and azimuth (for a given terrestrial latitude).

References in periodicals archive ?
In both cases, the semi-major axis and the flattening and appear in the expression for the prime vertical radius of curvature (expression (Bomford 1971) and subsequently in the expressions for latitude and height (Defence .
These are used to evaluate both the radius of curvature in the prime vertical (v as above) and the radius of curvature in the meridian p.
i]--curvature radius of prime vertical, computed for geodetic latitude [B.
i]--curvature radius of prime vertical (5), computed for geodetic latitude [B.
The company has identified several prime vertical markets, including healthcare, field sales and engineering, and education.
Arrow has an established base of resellers serving several of Vertex's prime vertical markets for data collection software solutions.