Our earth today is a bi-polar spheroid with a slightly reducedpolar and a slightly extended equatorial diameter.It rotates on itsaxis once in about 24 hours and revolves around its primary,the sun,once in approximately 365 days.Its axis of rotation is inclined 66(1/2)
Abstract:
Our earth today is a bi-polar spheroid with a slightly reducedpolar and a slightly extended equatorial diameter.It rotates on itsaxis once in about 24 hours and revolves around its primary,the sun,once in approximately 365 days.Its axis of rotation is inclined 66(1/2)
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A. W. GRABAU.1939. PRESENT STATUS OF THE POLAR CONTROL THEORY OF EARTH DEVELOPMENT[J].地质学报,(2). A. W. GRABAU.1939.[J]. Acta Geologica Sinica,(2).
