sci.physics.particle

On Mar 10, 7:07=A0pm, Igor wrote:
> On Mar 7, 10:23=A0pm, Tom Roberts wrote:
>
>
>
>
>
> > Igor wrote:
> > > EM fields don't obey the equivalence principle in general, since
> > > accleration due to an EM field is inversely dependent on test particle=

> > > mass.
>
> > Hmmm. The equivalence principle is about gravity, not EM. A direct
> > consequence of it is that _LOCAL_ MEASUREMENTS of EM phenomena in a
> > gravitational field should agree with similar MEASUREMENTS in an
> > isolated accelerating system. That is the subject of the query in this
> > thread, and is completely independent of how EM fields themselves happen=

> > to accelerate objects.
>
> > As I already pointed out, the equivalence principle is not violated. PMB=

> > gave a reference that discusses this in more detail.
>
> > Tom Roberts
>
> But that was my whole point. =A0Gravitational fields should not cause
> charges to radiate at all. =A0How can a charged particle undergoing
> geodesic motion radiate if not all observers agree that it is
> accelerating?- Hide quoted text -
>
> - Show quoted text -

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lets first know the facts:

does the charges that are radiated by sun glaires
radiate on their way to (or next to) our globe?
or not ??

TIA
Y.Porat
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