Re: recoiling photons evidence?

"George Dishman" <[EMAIL PROTECTED]> wrote in message
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> "ralph sansbury" <[EMAIL PROTECTED]> wrote in message
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> >
> > "George Dishman" <[EMAIL PROTECTED]> wrote in message
> > news:[EMAIL PROTECTED]
> > >
> > > "ralph sansbury" <[EMAIL PROTECTED]> wrote in message
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> > > >
> > > You can't have it both ways Ralph. If the mass of a photon
is
> > not
> > > zero then you can never have v=c and the momentum is
related to
> > > mass and speed exactly as for any other particle.
> >
> >    The first point is there is no particle that has mass zero
>
> Theory predicts that the mass of the photon should be zero
> and all known measurements bear that out.

    The measurements say that the photon mass is less than a
finite amount which is not the same as the assumption that it is
zero.

> > or infinite mass
>
> Infinite mass is an arithmetic error on your part. You
> first assume the photon has finite mass in contradiction
> to measurement,
    Wrong. the photon mass only shown to be less than a specific
finite mass. Tomorrow it could be shown to have a finite mass.


 then use use the "relativistic mass" which
> is really mass at all, it is a name for a combination of
> both mass and kinetic energy,

   You should familiarize yourself with the experiments of
Kaufmann (and millions of measurments using mass spectrometers
using modifications of this apparatus).
The mass increase whatever you want to call it is shown
to be decrease in the expected linear reaction to a magnetic
field of the charged emissions from radioactive materials.
It was as though they became heavier. This may be because the
magnetic interaction changed or because the gravitational
interaction changed. More weight has been given to the latter
theory but I prefer the former.


 then you assume the photon
> moves at v=c which is impossible if it has non-zero mass.

  Since light moves at v=c there does appear to be a
contradiction if the photon like other particles or  at least
like charged particles increases in mass from a nearly zero but
as yet undetermined finite mass.
   Of course as you say if its mass was exactly zero this
increase in mass or whatever would not occur. In any case all of
these possible properties for the photon no matter which ones you
accept make the photon unlike other particles for which the
conservation of momentum has been shown to be applicable.

> Given all those errors, it's hardly surprising you come up
> with contradictions.

    Even if you come up with a definition of the photon that is
not self contradictory, you still have the problem that the
properties are not like those of any other particle.
   Hence to use the photon conservation of momentum property to
speculate on the recoil of photon emissions where you cant find
further support from the magnetic interaction as in the Compton
and light pressure experiments, this is not good physics.

> I won't waste my time repeating what I have said before
> several times, you have repeatedly been given ample
> evidence that photons carry momentum and have offered no
> contradictory experimental evidence.

     The experiments that you interpret with the photon momentum
also have other characteristics like the fact that they can be
explained by the magnetic interaction mechanism.
   Unless you can find experiments where this is not the case
Your argument is not valid.
Ralph