 | William Thomas Read - 1862 - 144 pages
...east point when rising, and the west when setting. 30. A circle passing through the zenith, nadir, and the east and west points of the horizon, is called the prime vertical circle. 31. Another passing through the poles and the east and west points, is called the six o'clock... | |
 | George Albert Wentworth - Trigonometry - 1882 - 234 pages
...passing through the zenith of an observer, and perpendicular to his horizon. The vertical circle passing through the east and west points of the horizon is called the Prime Vertical ; that passing through the north and south points coincides with the celestial meridian. The Ecliptic... | |
 | George Albert Wentworth - Trigonometry - 1884 - 330 pages
...passing through the zenith of an observer, and perpendicular to his horizon. The vertical circle passing through the east and west points of the horizon is called the Prime Vertical; that passing through the north and south points coincides with the celestial meridian. The Ecliptic... | |
 | George Albert Wentworth - 1887 - 346 pages
...passing through the zenith of an observer, and perpendicular to his horizon. The vertical circle passing through the east and west points of the horizon is called the Prime Vertical! that passing through the north and south points coincides with the celestial meridian. The Ecliptic... | |
 | George Albert Wentworth - Navigation - 1895 - 436 pages
...through the zenith . of an observer, and perpendicular to his horizon. The vertical circle passing through the east and west points of the horizon is called the Prime Vertical ; that passing through the north and south points coincides with the celestial meridian. The Ecliptic... | |
 | David Peck Todd - Astronomy - 1897 - 506 pages
...the meridian; second, the vertical circle at right angles to the plane of the meridian, and passing through the east and west points of the horizon, is called the prime vertical. Any small circle of the celestial sphere cutting it parallel to the horizon is called an almucantar.... | |
 | George Albert Wentworth - Logarithms - 1897 - 384 pages
...passing through the zenith of an observer, and perpendicular to his horizon. The vertical circle passing through the east and west points of the horizon is called the Prime Vertical ; that passing through the north and south points coincides with the celestial meridian. The Ecliptic... | |
 | Herbert Coleman Whitaker - Trigonometry - 1898 - 216 pages
...circles through the zenith and nadir of an observer are called vertical circles. The vertical circle through the east and west points of the horizon is called the prime vertical of the observer. The vertical circle through the north and south points passes also through the poles... | |
 | George Albert Wentworth - Trigonometry - 1903 - 346 pages
...passing through the zenith of an observer, perpendicular to his horizon. The vertical circle passing through the east and west points of the horizon is called the Prime Vertical; that passing through the north and south points coincides with the celestial meridian. rio. 106 FIG.... | |
 | George Albert Wentworth, George Anthony Hill - Logarithms - 1903 - 348 pages
...passing through the zenith of an observer, perpendicular to his horizon. The vertical circle passing through the east and west points of the horizon is called the Prime Vertical; that passing through the north and south points coincides with the celestial meridian. 9 Z' FIG. 106... | |
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... the surface of the celestial sphere. The Zenith of an observer is that pole of his horizon which is exactly above his head. Vertical Circles are great circles passing through the zenith of an observer, and perpendicular to his horizon. 
