Glossary of Mapping, Charting, and Geodetic Terms |
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Page 3
... resulting from the application of both orthometric correction and an adjustment correction to a preliminary elevation . an adjusted position - An adjusted value of the coordinate position of a point . adjusted value - A value of a ...
... resulting from the application of both orthometric correction and an adjustment correction to a preliminary elevation . an adjusted position - An adjusted value of the coordinate position of a point . adjusted value - A value of a ...
Page 19
... resulting from observing tangents and taking a mean may be quite large . The error caused by asymmetry of an observed object is of the same character and requires the same treatment as the error resulting from observing an eccentric ...
... resulting from observing tangents and taking a mean may be quite large . The error caused by asymmetry of an observed object is of the same character and requires the same treatment as the error resulting from observing an eccentric ...
Page 38
... resulting density in a photographic image , usually plotted as the density ( D ) against the logarithm of the exposure ( log E ) in candle - meter - seconds . Also called H and D curve ; sensitometric curve ; D log E curve ; time ...
... resulting density in a photographic image , usually plotted as the density ( D ) against the logarithm of the exposure ( log E ) in candle - meter - seconds . Also called H and D curve ; sensitometric curve ; D log E curve ; time ...
Page 50
... resulting from differences in relief . contour interval - The prescribed elevation . difference between successive contour lines for a specific map sheet . Occasionally , the interval may vary within an individual sheet . See variable ...
... resulting from differences in relief . contour interval - The prescribed elevation . difference between successive contour lines for a specific map sheet . Occasionally , the interval may vary within an individual sheet . See variable ...
Page 54
... resulting from the application of these multipliers to the observation or condition equations shall be a minimum . See also condition equation ; normal equation . correlation - 1 . ( general ) The statistical inter- dependence between ...
... resulting from the application of these multipliers to the observation or condition equations shall be a minimum . See also condition equation ; normal equation . correlation - 1 . ( general ) The statistical inter- dependence between ...
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Common terms and phrases
adjustment aerial photographs altitude angle angular astronomical axis azimuth base bench mark called camera celestial body celestial equator celestial meridian celestial sphere chart-A chart circle computed conformal map contour coordinates correction curve datum determined difference direction distance earth ecliptic elevation ellipsoid fictitious geodesy geodetic geographic geoid graphic gravity Greenwich grid ground high water horizontal hour angle instrument intersection latitude length lens leveling rod longitude low water lunitidal interval magnetic map or chart map projection map projection-A map-A map mean measured Mercator method moon navigation negative object oblique observed optical orbit parallax parallel pendulum perpendicular photogrammetry plane polar pole position radar radial reference reference ellipsoid refraction rhumb line rotation satellite scale solar spheroid spirit level station stereoscopic surface survey tangent tape target telescope templet term terrain terrestrial theodolite tide tion topographic transverse traverse triangulation usually vernal equinox vertical
Popular passages
Page 160 - Every particle of matter in the universe attracts every other particle with a force that varies directly as the product of their masses, and inversely as the square of the distance between them.
Page 160 - Every body continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.
Page 48 - Every particle of matter, in the universe, attracts every other particle with a force, which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Page 127 - The squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun.
Page 147 - Map Projection — A systematic drawing of lines on a plane surface to represent the parallels of latitude and the meridians of longitude of the earth or a section of the earth. A map projection may be established by analytical computation or may be constructed geometrically...
Page 152 - Local mean time at the Greenwich meridian; the arc of the celestial equator, or the angle at the celestial pole, between the lower branch of the Greenwich celestial meridian and the hour circle of the...
Page 96 - ... geodetic meridian. A line connecting points of equal geodetic longitude. Also called geographic meridian. See astronomical meridian. geodetic parallel. A line connecting points of equal geodetic latitude. Also called geographic parallel. See astronomical parallel. geodetic position. A position of a point on the surface of the earth expressed in terms of geodetic latitude and geodetic longitude. A geodetic position implies an adopted geodetic datum, which must be stated for a complete record of...
Page 118 - Their wave lengths are longer than those of visible light and shorter than those of radio waves.
Page 123 - A radial from the isocenter. isostasy — A condition of approximate equilibrium in the outer part of the earth, such that the gravitational effect of masses extending above the surface of the geoid in continental areas is approximately counterbalanced by a deficiency of density in the material beneath those masses, while...
Page 228 - ... revolution from the fact that it can be formed by revolving an ellipse about one of its axes. If the shorter axis is used as the axis of revolution, an oblate spheroid results, and if the longer axis is used, a prolate spheroid results. The earth is approximately an oblate spheroid.