Encyclopaedia Britannica, 11th Edition, "Geodesy" to "Geometry"

Encyclopaedia Britannica, 11th Edition, "Geodesy" to "Geometry" - Volume 11, Slice 6GEODESY (from the Gr. , the...
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Encyclopaedia Britannica, 11th Edition, "Geodesy" to "Geometry"

Encyclopaedia Britannica, 11th Edition, "Geodesy" to "Geometry"

€6,17

Encyclopaedia Britannica, 11th Edition, "Geodesy" to "Geometry"

€6,17
Author: Various
Format: eBook
Language: English

Encyclopaedia Britannica, 11th Edition, "Geodesy" to "Geometry" - Volume 11, Slice 6

GEODESY (from the Gr. , the earth, and , to divide), the science of surveying (q.v.) extended to large tracts of country, having in view not only the production of a system of maps of very great accuracy, but the determination of the curvature of the surface of the earth, and eventually of the figure and dimensions of the earth. This last, indeed, may be the sole object in view, as was the case in the operations conducted in Peru and in Lapland by the celebrated French astronomers P. Bouguer, C.M. de la Condamine, P.L.M. de Maupertuis, A.C. Clairault and others; and the measurement of the meridian 608 arc of France by P.F.A. Mchain and J.B.J. Delambre had for its end the determination of the true length of the metre which was to be the legal standard of length of France (see Earth, Figure of the). The basis of every extensive survey is an accurate triangulation, and the operations of geodesy consist in the measurement, by theodolites, of the angles of the triangles; the measurement of one or more sides of these triangles on the ground; the determination by astronomical observations of the azimuth of the whole network of triangles; the determination of the actual position of the same on the surface of the earth by observations, first for latitude at some of the stations, and secondly for longitude; the determination of altitude for all stations. ......Buy Now (To Read More)

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Ebook Number: 37461
Author: Various
Release Date: Sep 17, 2011
Format: eBook
Language: English

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