[geocentrism] Re: Dynamic equivalents.
- From: Alan Griffin <ajg@xxxxxxxxxxxxx>
- To: geocentrism@xxxxxxxxxxxxx
- Date: Wed, 11 Aug 2004 22:26:48 +0100
On 11 Aug, Jack Lewis <jandj.lewis@xxxxxxxxxxxxx> wrote:
> Dear Members, It would seem that some people are not sure as to which
> models are or aren't dynamically equivalent. This is the first of 'my
> back to basics' idea so that I can sort out what's true and what's isn't.
>
> A The heliocentric model consists of a fixed Sun with a rotating
> Earth orbiting it.
No. The Earth and the sun both rotate about the common centre of
gravity, which I would guess to be inside the sun.
> B The geocentric model consists of a rotating,
> fixed Earth with the Sun orbiting it.
If the earth is rotating the same way as the sun, the sun would
remain stationary in the sky!
> C The geostatic model consists of a fixed, non-rotating Earth with
> the Sun orbiting it.
> A and B are dynamically equivalent but C is not equivalent to either of
> them.
> I will assume everyone agrees with this, if not please let me know.
Alan
Other related posts:
