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

How is spin measured experimentally ?

  1. Feb 11, 2014 #1

    this probably has been answered somewhere here already, but I was unable to find it.
    Could someone explain how the spin of a particle is actually measured in an experiment ? Most interesting to me is how the 3d spin vector for 1/2 spin particles is determined experimentally.

    Last edited: Feb 11, 2014
  2. jcsd
  3. Feb 11, 2014 #2

    Vanadium 50

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2017 Award

    It is impossible to measure a 3d spin vector - i.e. all three components - of anything.
  4. Feb 11, 2014 #3
  5. Feb 13, 2014 #4
    thank you. the Stern-Gerlach Experiment was helpful indeed.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook