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

Unitless ratio

  1. Sep 6, 2003 #1
    I was wondering if any of you could help me out a little. I have this unitless ratio:

    1/(1.36*10^23) = 7.33*10*(-24) = ((e^2)(k))/((c)(h))
    (k=coulomb's constant & h = h-bar)

    i need to know what the significance of this number is, and apparently there is a lot.
  2. jcsd
  3. Sep 7, 2003 #2


    User Avatar
    Staff Emeritus
    Gold Member
    Dearly Missed

    This is the fine structure constant, denoted α. It sets the strength of the electromagnetic force.
  4. Sep 7, 2003 #3
    Best line ever!!!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Unitless ratio
  1. Golden Ratio (Replies: 2)

  2. Algebra Ratio (Replies: 3)

  3. Ratios and fractions (Replies: 1)

  4. Division for ratios (Replies: 4)

  5. The Golden Ratio? (Replies: 3)