5.7 Doppler Effect for Light
Frequency and wavelength shifts for approaching or receding sources, derived with time dilation included, applied to redshifts and radar speeds.
3 exercises
5.7 Exercise 1
Suppose a space probe moves away from Earth at a speed 0.350c. It sends a radio-wave message back to Earth at a frequency of 1.50 GHz. At what frequency is the message received on Earth?
5.7 Exercise 3
What happens to the relativistic Doppler effect when relative velocity is zero? Is this the expected result?
5.7 Exercise 5
All galaxies farther away than about exhibit a red shift in their emitted light that is proportional to distance, with those farther and farther away having progressively greater red shifts. What does this imply, assuming that the only source of red shift is relative motion?
Adapted from University Physics Volume 3 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 3. Imported at revision db44eb9.