(Robin Whittle) writes:

I have a very long page at:

http://astroneu.com/plasma-redshift-1/

concerning two theories by which light is redshifted by a plasma
which is of such a low density that the inter-particle spacing
generally exceeds the coherence length of the light. This leads
the wavefront to travel in an inhomogenous medium: primarily
vacuum with occasional discrete interactions with particles
which slow down parts of the wavefront.

The obvious problem with all non-Doppler redshift theories is that
the Type Ia Supernova (SnIa) observations clearly show an observed
time dilation effect that is completely consistent with their observed
redshift. Any "tired light" or "dispersion" theory that does not invoke
a time-varying medium must necessarily fail miserably to explain the SnIa
observations, because two photons emitted at times separated by "\Delta T"
when they enter the medium must _still_ be separated by a time difference
"\Delta T" when they leave the medium. Therefore, such theories =CANNOT=
explain why an SnIa light curve is also stretched out in time by a factor
that is completely consistent with its observed redshift.


-- Gordon D. Pusch

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