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: Passing by

  1. Jun 12, 2006 #1
    I want to find out how many paricles on random move passing through a little hole ?
    There is no condition or force acting on eachof them. :biggrin: :biggrin:Thanks guys:biggrin: :biggrin:
  2. jcsd
  3. Jun 12, 2006 #2

    which is the energy for one photon, then can you see what the energy of many photons is??


    where n is the number of photons, hence rearrage to get n,

    i presume the photons get diffracted as they go through the hole in which case

    [tex] E=\frac{nhc}{\lambda}[/tex]

    where lambda is

    because you haven't given information on what you are given ie what values you have, I will also give you this for a particle,




    and as before [tex]\lambda=2d\sin\theta[/tex]

    also when asking questions, it is best to put more into them, your own workings and understanding and also a bit more in about the question, it is not easy to understand what you are asking with only 2 lines of writing

    best wishes

    Last edited: Jun 12, 2006
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook