3 ms·
With Doppler, in space, its the relative changes in position that create the effect, unless I am mistaken. Velocity needs a vector, in other words.
by 001sky 14y ago
With Doppler, in space, its the relative changes in position that create the effect, unless I am mistaken. Velocity needs a vector, in other words.
- lutusp 14y agoCosmological redshift isn't Doppler -- the mechanism is different. For cosmological redshift, light's wavelength changes because the space through which the light is moving is expanding, which stretches the waves. Doppler is often brought up in this context, but it has no role to play.
- 001sky 14y agoThanks for the comment. This clarifies the issue.