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Lorentz transformation question

  1. Aug 29, 2013 #1
    Hi, I was looking at a basic derivation of the lorentz transformation on youtube. I was wondering at what point do you incorporate the fact that speed of light is same in every reference frame because the guy only uses some algebra on a few equations that come from basic geometry and classical mechanics and the lorentz factor just pops out of nowhere. You could represent a beam of electrons instead with the letter c and you`d still arrive at the same result.(I think) Why is that?


    Oh, and can anyone recommend a good site where i can get a well explained and simple derivation of the lorentz transformation for time dilaltion and length contraction?


    the video is /watch?v=oLffmNXLjv4

    ps you can stop watching aroung 6:00
    thanks
     
  2. jcsd
  3. Aug 29, 2013 #2
    Actually, I get it now. I was too hasty to post online. Sometimes a bit of serious thinking is the best option !
     
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