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

Double Stern-Gerlach experiment

  1. Jun 21, 2014 #1
    If I were to take some electrons and send them through a Stern-Gerlach experiment, then under normal conditions half of them would be deflected upward and half downward. If however, I were to make an hole in the machine where the spin up particles were detected after selection, and now instead of hitting a detector they go through another Stern-Gerlach experiment . Would those particles all still be spin up, even though they never hit a detector, or would they split into two groups again, spin up and spin down?
  2. jcsd
  3. Jun 21, 2014 #2

    The Feynman Lectures on Physics has a nice and detailed discussion of this scenario and many similar ones.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook