Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Measuring the relative frequency of light while traveling in different directions.

  1. Oct 26, 2014 #1
    Can anyone tell me if the following is correct?

    Traveling directly towards a source of light at some constant speed, we will measure its frequency to be higher (compared to rest frequency) than what we would expect when using Newton’s laws. Just as traveling away from the source, we would measure its frequency to be a little lower than we would expect it to be.

    Thanks!
     
  2. jcsd
  3. Oct 26, 2014 #2

    Nugatory

    User Avatar

    Staff: Mentor

    Google for "Doppler effect" and "relativistic doppler effect".

    The classical Doppler effect says that if you and the light source are moving towards one another (don't think of this as one of them at rest and the other moving) you will measure a higher frequency, and if you and the light source are moving apart you will measure a lower frequency.

    Relativity adds an additional correction, the relativistic doppler effect.
     
  4. Oct 26, 2014 #3
    That's what I thought, just wanted to make sure. Thank you...
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Measuring the relative frequency of light while traveling in different directions.
Loading...