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solar system may not be north-south relative to the universe——whatever that may be!). As for what is the equator and what are the poles, if you look at the face of a football, if it is pointed end up-down, it would seem to be prolate, but if it is laying on its side, it looks like it could be oblate. But now spin it sideways, so that one of the pointed ends is facing you: The shape is such that the pointed ends can only be the poles and the mid-vertical circle is the equator, regardless of the football's tilt.
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I believe the orientation ("markings") of the spheroid is determined by the shape...not the other way around. Consider Earth, itself: It is tilted at an angle, thus what we consider north-south on the planet is not north-south relative to the solar system (and, probably, what is north-south to the
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I get the distinction between prolate and oblate, however; given a non-rotating sphere with no markings, where is the equator and where are the poles? WRT its use to describe a football, if a quarterback throws an awkward 'duck' of a pass, is it possible that the football becomes an oblate spheroid
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This difference between an oblate and prolate spheroids are that oblate spheroids bulge at their equator and prolate spheroids bulge at their poles. Polar refers to the poles, simalar to the North and South pole.
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This article has equations for two integrals, *volume* and *surface area*, no equation to define the object itself - it's *surface*. Can anyone add this?
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in London is prolate spheroid. If so, perhaps it could be added to the text as an example of this shape.
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For the 2nd question, polar diameter means "the diameter mesured between the poles".
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What is the difference between and an oblate spheroid and a prolate spheroid?
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I have two questions about this article if anyone is watching:
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