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" The prime vertical is that vertical circle which passes through the east and west points. "
An introduction to geography and astronomy, by the use of the globes and ... - Page 274
by Edward Bruce (bookseller.) - 1821
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A Treatise on Plane and Spherical Trigonometry: With Their Most Useful ...

John Bonnycastle - 1806 - 464 pages
...and cutting the horizon at right angles. The prime vertical, or six o'clock hour line, is the azimuth circle which passes through the east and west points of the horizon ; being that on which the sun rises and sets when the days and nights are equal. The latitude of any...
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An Introduction to the Theory and Practice of Plane and Spherical ...

Thomas Keith - 1810 - 478 pages
...altitudes of the heavenly bodies are measured on these circles. (N) The prime "vertical is that azimuth circle which passes through the east and west points of the horizon. (O) Meridians are great circles passing through the poles of the world, and cutting the equinoctial...
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A New Treatise on the Use of the Globes, Or, A Philosophical View of the ...

Thomas Keith - 1811 - 388 pages
...making the other end move along the wooden horizon of the globe. 44. The PRIME VERTICAI is that azimuth circle which passes through the east and west points of the horizon, and is always at right angles with the brass meridian, which may be considered as another vertical...
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A Compendious Treatise on the Use of the Globes, and of Maps: Compiled from ...

John Lathrop - 1812 - 218 pages
...making the other end move along the wooden horizon of the globe. 177. The prime vertical is that azimuth circle •which passes through the east and west points of the horizon, and is always at right angles with the brass meridian, which may be considered as another vertical...
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A New Treatise on the Use of the Globes; Or, A Philosophical View of the ...

Thomas Keith - 1821 - 408 pages
...making the other end move along the wooden horizon of the globe. 44. The PRIME VERTICAL is that azimuth circle which passes through the east and west points of the horizon, and is always at right angles to the brass meridian, which may be considered as another vertical circle...
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Ancient Geography, as Connected with Chronology, and Preparatory to the ...

Emma Willard - 1822 - 102 pages
...the zenith towards the nadir, cutting the horizon at right angles. The Prime Vertical is that Azimuth Circle which passes through the east and west points of the horizon, and is always at right angles with the meridian. Solstitial Points are the first points of Cancer and...
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Containing the theories of the fixed stars. 1821

Robert Woodhouse - 1823 - 466 pages
...greatest, that is, when PZSssQCf, or the azimuth, is 90°, or the body is on the Prime Vertical: which is that vertical circle which passes through the east and west points. The above is the reason of the precept given by Dr. Maskelyne at p. 152, Nautical Almanack, in which...
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Ancient Geography, as Connected with Chronology, and Preparatory to the ...

Emma Willard - 1827 - 104 pages
...zenith towards the nadir, cutting the horiznii at right angles. The Prime Vertical is that Azimuth Circle which passes through the east and west points of the horizon, and is always at right angles with the meridian. Solstitial Points are the first points of Cancer and...
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The New American Grammar of the Elements of Astronomy: On an Improved Plan ...

James Ryan - 1827 - 408 pages
...zenith of any place, and making the other end move along the horizon of the globe. 7. That azimuth circle which passes through the east and west points of the horizon, is called the prime vertical. This circle is always at right angles with the brass meridian, which...
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A System of Universal Geography: On the Principles of Comparison and ...

William Channing Woodbridge - 1829 - 494 pages
...the zenith towards the nadir, cutting the horizon at right angles. The Prime Vertical is that Azimuth Circle which passes through the east and west points of the horizon, and is always at right angles with the meridian. bu'stitial Points are the first points of Cancer and...
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