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De Broglie Wavelengths

  • Thread starter Epif
  • Start date
  • #1
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Homework Statement


What is the de Broglie wavelength of a 10 microKelvin Rb atom? A 5000K electron?


Homework Equations


[tex]\lambda=\frac{h}{p}[/tex]
V=[tex]\sqrt{\frac{3KT}{m}}[/tex]

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.

Thanks!
 

Answers and Replies

  • #2
Sounds good to me, just be careful if you're thinking about using that method for photons - you will go wrong!
 

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