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In Reply to: RE: Oh, geez posted by unclestu on April 28, 2015 at 20:25:14
It's NOT an Oblete spheroid? That's what I always thought!
Yes, of course. This fact was apparently known to even the Ancient Egyptians. The length of degree varies as a function of Latitude. There exists a regular additive series which expresses this change.
We can talk about Egyptian Cubits, if you like, or even the ancient measure of Stadium, which is apparently 185 meters or 1/10 minute of arc.
Modern 'shape of Earth' stuff revolves around whose 'spheroid' you use as reference.
When I talk about the shape of the Ionosphere, it is NOT conformal to the shape of the Earth, but rather responds to the Solar Wind, as well. At a particular point on Earth, the Schumann Resonance measure will change as a function of time of day and solar orientation.
Too much is never enough
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