Geodesics

Chapter

Abstract

‘Geodesy’ comes from Greek γη, Earth, and \(\delta \alpha \acute{\iota }\omega \), divide, i.e.‘Earth division’. ‘Geodesic’ will be used in a rather special geometric sense in the following, but it will be related to the old problem of measuring the shortest path on the curved surface of the Earth. From the Euclidean geometry of a plane surface, we know that the shortest path between two points is the straigth line between the points on the surface. However, on the spherical surface of the Earth you cannot find straight paths, so the shortest path between two points is the straightest possible path on the surface between the points. Such paths are called geodesic curves.

Keywords

Electromagnetism 

Copyright information

© Springer Science+Business Media LLC 2011

Authors and Affiliations

  1. 1.Oslo University CollegeOsloNorway

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