Zyxzevn wrote:fencewalker wrote:what makes u think that plasma affects this doppler shift in frequencies?
Correction: it is not "doppler-shift", it is red-shift.
With "doppler-shift", you are already making an assumption, so it is a logical fallacy.
How can plasma cause redshift in frequencies?
I think that this effect is similar to what I call, the laser effect.
In a laser, the photons line up to form a single wave.
In a laser we have excited electrons to produce energy for this additional light.
So in the plasma of a laser, the electrons have the tendency to line up with the already
available light.
This means that the new light can also replace the original light.
To cause redshift, the light transmitted is of slightly lower energy.
This is possible due to the absorption of the momentum of the light.
Any speed that an electron gains will have some natural resistance,
and this means that it is very likely that plasma causes redshift to light.
And indeed do we see in the laboratory that this happens.
From the laboratory we learn:
The redshift corresponds with the amount of free electrons.
As a side effect, the light of the redshifted light is also slowed down, depending on frequency.
If the process is similar, then by measuring the slowing down of light,
we can measure the amount of plasma-redshift of light in space.