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: Uncertainty in Frequency of a Photon

  1. Nov 10, 2008 #1
    The question states:
    consider a wave packet in the form of a pulse lasting 0.001sand length 3E5m. Since an individual photon of this wave can have an uncertainty of 3E5m (meanng it could be anywhere within the pulse), what is the uncertinty in momentum of the photon? in frequency?

    OK, so using the equation [tex]\Delta[/tex]p=h/[tex]\Delta[/tex]x, I found the momentum to be 2.2E-39 kgm/s

    I also have the equation [tex]\Delta[/tex]v=[tex]\Delta[/tex]E/h=1/[tex]\Delta[/tex]t
    but the answer is incorrect, how do you find the [tex]\Delta[/tex]v for a single photon?

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

Can you offer guidance or do you also need help?
Draft saved Draft deleted