Special Publications, Volume 205U.S. Government Printing Office, 1936 |
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Expressions et termes fréquents
accuracy areas Bonne projection cartographer central meridian Coast and Geodetic compass compilation computed configuration conformal projection construction contours curved lines datum depth detail determined direction distances distortion earth earth's surface equal equal-area projection Equator frequently Geodetic Survey chart geographic position given Gnomonic Gnomonic projection graphic great-circle grid hydrographic intervals Lambert conformal Lambert meridional latitude latitude and longitude letters locality longitude magnetic map or chart map projection maps and charts material Mercator chart Mercator projection meridians and parallels meridians are straight meters method miles Mollweide projection nautical charts navigation obtained ocean parallels are concentric photolithography planes of reference polyconic projection properties purposes represented rhumb line right angles scale error serve sheets shortest Sinusoidal projection soundings Special Publication spheroid standard parallels Stereographic straight lines tion topographic transverse true azimuths true scale true to scale U. S. Coast United States Coast variation world maps
Fréquemment cités
Page 13 - THERE rolls the deep where grew the tree. O earth, what changes hast thou seen ! There where the long street roars, hath been The stillness of the central sea. The hills are shadows, and they flow From form to form, and nothing stands ; They melt like mist, the solid lands, Like clouds they shape themselves and go.
Page 7 - So geographers, in Afric maps, With savage pictures fill their gaps, And o'er unhabitable downs Place elephants for want of towns.
Page 18 - Law of variation of erosive power. — The erosive power of water, or the power of overcoming cohesion, varies as the square of the velocity of the current.
Page 20 - The United States Navy and the United States Coast and Geodetic Survey are also contributing valuable data in connection with their hydrographic surveys and investigations.
Page 58 - These radio bearings are the bearings of the great circles passing through the radio stations and the ship, and unless in the plane of the equator or of a meridian, would be represented on a Mercator chart as curved lines. Obviously it is impracticable for a navigator to plot such lines on...
Page 3 - Countries is purely Historical, founded on the real Transactions of those Times, and by far the most valuable Piece of History and Geography left us concerning the State of Greece in that early Period. Greece was then divided into several Dynasties, which...
Page 55 - Astraeus, the parentage of fierce, destructive winds being assigned to Typhon. According to another report, neither the origin nor the number of the deities of the winds was known, the prevalence in particular districts of winds blowing from...
Page 3 - ... countries, was purely historical, founded on the real transactions of those times, and by far the most valuable piece of history and geography left us concerning the state of Greece in that early period. His geographical divisions of that country were thought...
Page 55 - CARDINAL POINTS ; the four intersections of the horizon with the meridian and the prime vertical circle. They coincide with the four cardinal regions of the heavens, and are, of course, 90° distant from each other.