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

How they get to the 3rd equation

  1. Dec 4, 2004 #1
    I don't understand hLink how they get to the 3rd equation... I'm completely lost...
  2. jcsd
  3. Dec 5, 2004 #2


    User Avatar
    Science Advisor

    (f=frequency, v=velocity)

    Simplify right hand side to get:(v/c-(v/c)2/2)/(1-v/c)

    Assume v<<c, you end up with v/c.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook