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

Quantum of charge

  1. Jan 29, 2008 #1
    Hello all.

    I was wondering - what is the smallest possible quantum of charge? Is it 'e', the charge on an electron? Then how are the charges on quarks explained? Am I right in thinking that the one quantum of charge is the smallest charge that can possibly exist?

  2. jcsd
  3. Jan 29, 2008 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor

    "e" is the unit of charge. I'm not sure if you can consider it as a "quantum" of charge.

    Is it the smallest charge that we have detected. Nope. 3 Nobel Prizes can point to that. Fractional quantum hall effect, and the resulting fractional charges, (in units of 1/3e and 1/5e) have been measured in 2D semiconductor structures.

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook