Quote:
Originally Posted by MargaretR
That sounds plausible if you subscribe to the theory that the earth has a solid/molten core.
Maybe it doesn't, and is hollow- (as per Admiral Byrd who explored both polar regions in the late 40s)
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If that were the case, the core would melt down to beyond halfway through the solid crust and eventually stop before it broke through to the empty bit - assuming the mass of the crust was equal the world over. How far it got beyond the halfway mark would be dependent on the amount of gravity generated by the opposite crust - so the thicker the earth's crust, the deeper the theoretical perpetually melting core would go.
Quote:
Originally Posted by Tealeaf
Blimey! And I though I'd done a serious scientific exercise. I shall have to get my piece of string out again and double-check my antipodes.
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It's easy enough to do if you have Google Earth. Just find the latitude and longitude you're interested in - make the latitude a negative, i.e. change north to south or vice versa. Subtract the longitude from 180 and make that a negative (i.e. change east to west or vice versa. So Accrington is at 53.75 north, 2.37 west, the opposite side of the world is 53.75 south, 177.63 east, which is a point in the Pacific 350 odd miles east of Campbell Island