Figure of the Earth

A view across a 20-km-wide bay in the coast of Spain. Note the curvature of the Earth hiding the base of the buildings on the far shore.

Scale drawing of the oblateness of the 2003 IERS reference ellipsoid. The outer edge of the dark blue line is an ellipse with the same eccentricity as that of the Earth, with north at the top. For comparison, the outer edge of light blue area is a circle of diameter equal to the minor axis. The red line denotes the Karman line and yellow area, the range of the International Space Station.

The expression figure of the Earth has various meanings in geodesy according to the way it is used and the precision with which the Earth's size and shape is to be defined. While the sphere is a close approximation of the true figure of the Earth and satisfactory for many purposes, geodesists have developed a number of models to represent a closer approximation to the shape of the Earth.

单词	Earth shape
释义	Earth shape 原声例句假如有如果 I mean, the earth, shaped like one. 我是说，要是地球形状像一个橄榄球的话。迷人历史 These ideas of our position in space – and earth's shape –have not arrived in a vacuum; they have been critiqued and researched for centuries. 这些关于我们在太空中的位置——以及地球的形状——的想法并不是凭空而来的；几个世纪以来，它们一直受到批评和研究。英语百科 Figure of the Earth The expression figure of the Earth has various meanings in geodesy according to the way it is used and the precision with which the Earth's size and shape is to be defined. While the sphere is a close approximation of the true figure of the Earth and satisfactory for many purposes, geodesists have developed a number of models to represent a closer approximation to the shape of the Earth.
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Earth shape

Figure of the Earth