Re: Is spacetime curvature the source of inertia?

On May 31, 12:33 pm, "Todd" <T...@xxxxxxx> wrote:
Thanks to everyone who replied. I think my interpretation of the author's
phrase 'source of inertia' was too restrictive. I was thinking of the phrase
as referring to whatever it is that causes an object to resist being
accelerated relative to a local inertial frame. As Martin and Tom point
out, it could be that the author is using 'source of inertia' to mean
whatever it is that determines the distribution of local inertial reference
frames in spacetime. This interpretation seems to be in line with that of
Ciufolini and Wheeler in their book _Gravitation and Inertia_ where on page
4 we find (in Wheeler's characteristic style):

Einstein's geometrodynamics has transmuted Mach's
bit of philosophy into a bit of physics, susceptible to
calculation and test. Let us bring out the main idea in
what we may call poor man's language. Inertia here,
in the sense of local inertial frames, that is the grip of
spacetime on mass here, is fully defined by the geometry,
the curvature, the structure of spacetime here.

There are other places in the book where they use the word 'inertia'
synonymously with 'local inertial frames'.

For gripping a pseudo-space with poor man's language
that seems quite concise.

Some of the recent papers by Tajamr and de Matos, localise
graviphotons near a superconducting surface. You might
get a better sense of what real matter and energy has
to do to respond inertially by reading their analysis.
As I recall, references to E. Mach are included.
Some papers are linked at the bottom of this article:
http://www.esa.int/SPECIALS/GSP/SEM0L6OVGJE_0.html

Sue...




Todd


.

Relevant Pages

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