Re: pinhole moon / earth interaction

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From: Bill Taylor (bt4_1284@yahoo.com)
Date: Sat Mar 27 2004 - 08:33:05 PST 

Message-ID: <20040327163305.1962.qmail@web40411.mail.yahoo.com>
Date: Sat, 27 Mar 2004 08:33:05 -0800 (PST)
From: Bill Taylor <bt4_1284@yahoo.com>
Subject: Re: pinhole moon / earth interaction

So the Moon will eventually fly off into space?

Is the same interaction happenning between the Earth and the Sun? (My
guess would be no.)

- Bill

From: "Paul Doherty" <pauld@exploratorium.edu>
Subject: Re: pinhole moon / earth interaction
Date: Wed, 24 Mar 2004 11:49:11 -0800
Message-ID: <web-200046@exploratorium.edu>

Hi Peter

Lunar gravity tugs on the surface of the earth with a
force raising a tidal bulge. However the force creates an
acceleration of the surface of the earth, which creates a
velocity, which creates a displacement, So there is a time
delay between when the bulge is pulled on and when it
reaches its maximum height.

The rotation of the earth caries the tidal bulge forward
of the earth moon line during this time delay. The bulge
is actually a little in front of the moon and so pulls it
forward adding to its orbital energy and raising its
orbit.

Paul D

=====
Bill Taylor
Drew School
San Francisco
415 661 9667

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