Is the Doppler effect analogous to time dilation?

[quarky]

The relative motion of the observer and observed can alter the nature of the sound recorded where the observer is. At the extreme, is the sonic boom,

If Doppler is a poor analogy, in what ways?

 

[ben m]

If Doppler is a poor analogy, in what ways?

The Doppler effect depends on direction---it happens when the observer is moving towards or away from the source, not when the observer is moving sideways. (It happens for light---redshift and blueshift---as well as for sound.) Time dilation, on the other hand, is a genuine clock-rate-difference which is present no matter what direction people are moving in, and it's still there even if you've tried to take Doppler shifts into account.

 

[quarky]

Thanks Ben. Don't know why I hadn't considered the sideways motion and Doppler.
Yet, it does happen on an angle.