(January 22, 2010 at 7:28 am)TruthWorthy Wrote: lol, it's the first thing to come up when I googled 'speed of light slowing down'. Also notice in that crappy article, that's published by the way, that red shift is clearly gaining a mention. Also, the evidence is only suggestive which is all I ever said. I never said there is substantial proof. Adrian's the proof maniac, not me.The article is pathetic. It's an attempt to show that the Genesis account could be real, since the site is run by creationists. Find some actual research please. If the measurements in the article are true (and I highly doubt they are, since WND tends to make up shit all the time), then all it shows is that measuring has become far more accurate.
Anyways, why shouldn't red shift naturally have a slowing effect on light waves. After all, doesn't the infrared end of the spectrum propagate at 'slower' speeds! How else does refraction work.
Your statements about red-shift show your complete lack of understanding of physics. Red shift occurs because space is expanding as light moves away from us, stretching the wavelength of the light. This doesn't slow light down though, because the frequency is also shortened by a proportional amount. The speed of light 'c' is calculated by multiplying the frequency and wavelength of the light (as is the calculation for any speed of a wave).
c = fλ
If the wavelength is doubled, the frequency is halved. End result: same speed.
No, the infrared end of the spectrum doesn't travel slower than the ultraviolet end of the spectrum *facepalm*. They have different wavelengths and frequencies, but the same speed.
The reason refraction occurs is because when entering a different medium (in this case, glass), the speed of light and the wavelength changes, but the frequency doesn't. The refractive index of glass varies with frequency, resulting in dispersion of the different frequencies of light into the colours of the visible spectrum.
