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

Why is the central electrode in a G.M. tube positive?

  1. May 14, 2015 #1
    Why is the central electrode in a Geiger-Muller tube always positive (and not negative)?

    Many thanks!
  2. jcsd
  3. May 14, 2015 #2


    User Avatar
    2017 Award

    Staff: Mentor

    If it would be negative, your electrons would move outwards where the field strength is too low to get charge multiplication.
  4. May 14, 2015 #3
    Thank you very much! I understand now :)
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook