1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Which expansion is used for this result?

  1. Apr 19, 2014 #1
    exp (hv/kT) - 1

    For hv<<kT

    exp (hv/kT) - 1 is approximately equal to hv/kT

    thanks for any ideas.
  2. jcsd
  3. Apr 19, 2014 #2


    User Avatar
    2017 Award

    Staff: Mentor

    How many expansions do you know?

    exp(x) ~ 1+x should look familiar.
  4. Apr 19, 2014 #3
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted