Re: Gravity is repulsive

From: Paul Schlyter (pausch_at_saaf.se)
Date: 06/18/04 

Date: Fri, 18 Jun 2004 15:44:34 GMT

In article <4dEAc.1391$9Q5.513@newsfe2-gui.server.ntli.net>,
Roger Hamlett <rogerspamignored@ttelmah.demon.co.uk> wrote:

>Think about this for a moment.
>Though the curvature of spacetime, explains the actual 'behaviour' in terms
>of influencing the path of objects/light etc., it does _not_ explain how the
>curvature creates an attractive force.

Actually it does! Ever heard about inertia? Inertia is the reason why,
within a rotating coordinate system, there appears pseudo-forces such
as the centrifugal and coriolis forces. It is also the reason why
gravity appears as a pseudoforce in the curved 4-dimensonal space-time.

Note that this also explains why the inertial mass and the gravitational
mass have the same value. This has been verified experimentally to perhaps
some 13 digits of precision. And GR is the only theory which gives an
explanation to this: since gravity is a pseudo-force due to inertia,
the gravitational and inertial masses don't merely happen to have the
same value - they are the same thing. 

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