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

Clarification on length contraction

  1. Apr 12, 2009 #1
    I ask this just to clarify something, because something I read threw me off earlier.

    An object travels near the speed of light, and you are stationary. You measure the object somehow, and find it's length from your reference frame. Would it's length be shorter or longer than the proper length?

    Thanks in advance.
  2. jcsd
  3. Apr 12, 2009 #2


    User Avatar
    Homework Helper
    Gold Member

  4. Apr 12, 2009 #3
  5. Apr 12, 2009 #4


    User Avatar
    Science Advisor

    As long as you're using an inertial frame, it's not possible for an object's length to be longer than its proper length (length in its own rest frame).
  6. Apr 12, 2009 #5
    That's what I thought.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook