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!

Homework Help: De Broglie Wavelengths

  1. Sep 8, 2009 #1
    1. The problem statement, all variables and given/known data
    What is the de Broglie wavelength of a 10 microKelvin Rb atom? A 5000K electron?

    2. Relevant equations

    3. The attempt at a solution
    I used the velocity equation to find the velocity relating to temperature and mass. Then, as p=mv, I calculated the wavelength of the Rb atom to be 86.4nm. I just want to make sure my line of thinking is correct and that I can use a similar process for the electron.

  2. jcsd
  3. Sep 8, 2009 #2
    Sounds good to me, just be careful if you're thinking about using that method for photons - you will go wrong!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook