 | John Merrifield - Nautical astronomy - 1886 - 376 pages
...it is the co-ordinate easiest to be found, and also because it is the one used in finding the others The latitude of a place is the angle at the earth's centre subtended by the arc of a meridian intercepted between the equator and the place. Now as the arc of a declination circle intercepted... | |
 | Nathaniel Bowditch - Nautical astronomy - 1888 - 704 pages
...Prime Meridian and the meridian of the place. The LATITUDE of a place on the surface of the earth is the arc of the meridian intercepted between the Equator and the place. Longitudes are reckoned East and West through 180 ; from the origin, the interception of 'the Prime... | |
 | Coastwise navigation - 1902 - 650 pages
...the zenith of the observer stationed at o. Now, the latitude of any place on the earth is denned as the arc of the meridian intercepted between the equator and the place. In this case, therefore, the latitude of the observer at o is the arc eo of the meridian pe p'; this... | |
 | Institution of Electrical Engineers - Electrical engineering - 1906 - 738 pages
...radius of the circle in which the wave-front cuts the globe is directly proportional to the sine of the angle at the earth's centre subtended by the arc of the surface between the transmitter and the wave-front. This agrees with Duddell's law because for small... | |
 | James Erskine-Murray - Telegraph, Wireless - 1907 - 382 pages
...radius of the circle in which the wave front cuts the globe is directly proportional to the sine of the angle at the earth's centre subtended by the arc of the surface between the transmitter y/////// //////////////////// ////////. K1t;. 121. and the wave front.... | |
 | International Correspondence Schools - 1908 - 626 pages
...the zenith of the observer stationed at o. Now, the latitude of any place on the earth is defined as the arc of the meridian intercepted between the equator and the place. In this case, therefore, the latitude of the observer at o is the arc eo of the meridian pep?; this... | |
 | James Erskine-Murray - Telegraph, Wireless - 1909 - 434 pages
.../////////////////////// FIG. 147. circle in which the wave front cuts the globe is directly proportional to the sine of the angle at the earth's centre subtended by the arc of the surface between the transmitter and the wave front. This agrees with Duddell's law, because for small... | |
 | James Erskine-Murray - Telegraph, Wireless - 1913 - 500 pages
...radius of the circle in which the wave front cuts the globe is directly proportional to the sine of the angle at the earth's centre subtended by the arc of the surface between the transmitter and the wave front. This agrees with Duddell's law, because for small... | |
 | James Gill - Nautical astronomy - 1918 - 466 pages
...cor. 0 ; eye, 100 ft. Find true alt CHAPTER XIII. LATITUDE BY MERIDIAN ALTITUDE. ART. 58. — Latitude is the angle at the earth's centre subtended by the...meridian intercepted between the equator and the place. The arc of the declination circle intercepted between the observer's zenith and the equinoctial subtends... | |
 | Institution of Electrical Engineers - Electrical engineering - 1906 - 756 pages
...radius of the circle in which the wave-front cuts the globe is directly proportional to the sine of the angle at the earth's centre subtended by the arc of the surface between the transmitter and the wave-front. This agrees with Duddell's law because for small... | |
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... at greater distances than those of Duddell's experiments, which only extended to sixty miles, we find from simple mathematical, or rather geographical, considerations that the radius of the circle in which the... 