Van der Grinten projection

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The correct title of this article is van der Grinten. The initial letter is shown capitalized due to technical restrictions.
A van der Grinten projection of the Earth
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A van der Grinten projection of the Earth

The van der Grinten projection is neither equal-area nor conformal. It fits the entire Earth into a circular shape, though the polar regions are subject to extreme distortion. The projection was proposed by Alphons J. van der Grinten in 1904, and, unlike most projections, is an arbitrary geometric construction on the plane. It was made famous when the National Geographic Society adopted it as their reference map of the world from 1922 until 1988.