Figure of the Earth | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-05-15

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Figure_of_the_Earth


00:00:37 1 Motivation
00:03:35 2 Models
00:03:55 2.1 Sphere
00:06:19 2.2 Ellipsoid of revolution
00:11:19 2.3 Geoid
00:13:44 2.4 Other shapes
00:15:50 3 Earth rotation and Earth's interior
00:17:02 4 Global and regional gravity field
00:17:49 5 Volume
00:18:01 6 See also
00:18:30 7 Notes and references
00:18:59 8 External links
00:19:41 Notes and references
00:20:36 External links



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Speaking Rate: 0.800582514284247
Voice name: en-AU-Wavenet-A


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SUMMARY
=======
Figure of the Earth is a term of art in geodesy that refers to the size and shape used to model Earth. The size and shape it refers to depend on context, including the precision needed for the model. The sphere is an approximation of the figure of the Earth that is satisfactory for many purposes. Several models with greater accuracy have been developed so that coordinate systems can serve the precise needs of navigation, surveying, cadastre, land use, and various other concerns.