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| Philby |
go the geoid! :D
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| Dj_Es-Dva |
| Pfft can't even seen the centroid there. |
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| Deeman |
| So now that we know the Earth is not a perfect sphere but a sphere none the less, tell me, what happened to Gumble?? |
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| Omega_M |
| quote: | Originally posted by pkcRAISTLIN
i call bollocks. the moon's gravitational pull might make a bulge out of the water but thats about it. this does not preclude the earth from being a sphere. |
The bulge on the earth's equator is ofcourse because of it's rotation about the axis. But the moon does exert a bulging force on the rocks. This page gives a beautiful explanation about a number of earth-moon related gravitational effects. I'll quote the part that is relevant here.
| quote: | | ...that is why there are two tidal bulges on the Earth, one on the near side, and one on the far side. Since water is more flexible than rock, we see the tidal effect strongly in the oceans of the Earth, but barely at all in the ground. However, the rock does bend, by as much as 30 centimeters (about a foot) up and down twice a day! |
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| pkcRAISTLIN |
| ! i stand corrected. cheers omega :) |
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