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Freethought & Rationalism ArchiveThe archives are read only. |
08-08-2002, 04:51 AM
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#1 |
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Senior Member
Join Date: Apr 2001
Location: France
Posts: 715
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Tides physics
I have just read in a science magazine for kids an explanation of the tides:
Due to moon and Sun attraction. OK, nothing to fight there. Why is there 2 high tides a day in a lot of parts of the world? THe explanation they gave was: due to centrifuge force AAAARGGHHHH! Earth does not rotate around the moon! (I hope I have not learned you something there  )If you take into account the very simplified static model of tides, and try to calculate the equipotential equilibrium surface, it has 2 maxima and it is not due to centrifuge force! |
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08-08-2002, 07:14 PM
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#2 |
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Veteran Member
Join Date: Oct 2001
Location: Alberta
Posts: 1,049
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There is a lot of bad science books/magazines for kids out there. I ditched on book that claimed that "birds came from the sea, and the first birds had no feathers" - and showed a picture of a pterosaur flying over the ocean - JEEZZZZ. It also claimed that trilobites are the direct ancestors of crusatceans.
[ August 08, 2002: Message edited by: Late_Cretaceous ]</p> |
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