🚀 go-pugleaf

On Apr 29, 5:36 am, Tom Roberts <tjroberts...@sbcglobal.net> wrote in
sci.physics.relativity:
> Jerry wrote:
> > In emission theory, what miraculous combination of circumstances
> > results in light being emitted at precisely "c" relative to the
> > source? Real sources are messy things composed of atoms or other
> > particles zooming around in rapid thermal motion. It should seem
> > that light emitted from typical sources ought to show a spread
> > of velocities in the multiple parts-per-billion level.
>
> Great idea! All it takes is a numeric estimate.
>
> At room temperature, atoms in a solid or gas move with speeds of a few
> hundred meters/sec. Let me just use 100 m/s. For a photon emerging from
> a room-temperature window into vacuum, in some un-specified emission
> theory, each photon must have interacted with some last atom. The
> variance in motion of those different atoms implies that the different
> photons making up a laser beam going through a window into vacuum must
> have a variance in speed of about 100 m/s. One meter from the window
> this implies a variation in arrival time of about 3 femtoseconds. That
> is a lower bound on the pulse width for a laser pulse 1 meter from a
> window. Laser pulses more than 30 times shorter than that have been
> reported in the literature, and they definitely propagate further than
> the 3 cm this lower bound would permit. These are X-ray lasers, and
> their windows may well get hotter than room temperature.
>
> So any emission theory in which photons interact with atoms, and the
> last such atom acts as a new source, is refuted.

Bravo Honest Roberts! The problem is that your "refutation" is
somewhat rash - it is based on implicit assumptions concerning
MICROSCOPIC events that you (by no means the cleverest Einsteinian)
cannot even formulate, let alone justify. Ask your cleverer brothers
and they may explain to you that the ESSENTIAL difference between
Newton's emission theory of light and Divine Albert's Divine Theory is
that the former claims the speed of photons depends on the speed of
the MACROSCOPIC source whereas the latter sees no such dependence.
Having this ESSENTIAL difference in mind, Honest Roberts, you can
start learning the implications of the emission theory:

http://groups.google.com/group/sci.physics.relativity/browse_frm/thread/f9b66444b84d54f2?

Pentcho Valev
pvalev@yahoo.com