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Registered: 9/13/2012

Posts: 8,338

#1021 2/12/2016 7:19 PM UTC

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Drakkoska

But a geoid is, by definition, shaped like the Earth, right?

Ment

Obviously, for the three-dimensional case, we have a sphere in 3D, not in 4D space.

But a sphere in 3D space is two-dimensional. It doesn't become three-dimensional.

Ничто не возникает из ничего и ничто не пропадает бесследно.
Если где-то чего-то убудет, то в другом месте добавится.
(Закон сохранения).