Board Thread:General Discussion/@comment-9490823-20141023235024/@comment-34326521-20141024061955

Bc9661 wrote: The Doppler affect specifically applies to light. No part of redshifting involves anything involving sound. The difference between the longitudinal/ transverse waves of sound and the wavelength/frequency of light is astronomical.

Doppler shifts apply to any wave, including sound. Google it. Or just go on Wikipedia, if you want the gist of it.

Bc9661 wrote: Nothing about Doppler applies to sound, and even if it did, you would still be wrong. Sound is the vibration of atoms through space. Rather than jiggling an atom to create an electromagnetic ray, you are bumping it. It bumps its neighbors, and so on and so forth.

If you understood more about Doppler shifts, you'd know why you were wrong.

Bc9661 wrote: There is such minute matter in space (excluding theorized dark matter and quantum dark energy creation) that soundwaves can't travel through it at all. The main known source of redshift is the expansion of the universe, something that doesn't affect sound at all, due to the vacuum of space.

Obviously Doppler shifts in sound only occur in an atmosphere, but they do occur. Surely you've heard the sound a car's engine/ambulance's siren makes when it speeds past you.