Re: rotation of the earth

George Murphy (
Mon, 15 Dec 1997 21:21:54 -0500

Glenn Morton wrote:

> I wish that Manchester had documented his page better. I agree with Ted and
> George and you that Magellan's voyage does not play much of a historical
> role that I have ever heard in the argument about heliocentricity.
> The only complaint I have about your reply is that like George, you reduced
> the problem to one of ONLY a missing day. There was also an equal but
> opposite discrepancy between the ship and the planetary sphere which upsets
> the ratios of epicycles to eccentrics.

Here is another twist: _If_ you are right about the anomaly,
the Magellan result _should_ have resulted in a crisis for the Ptolemaic
system, even if Manchester is wrong about the history & it didn't!

George L. Murphy