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Representation Of Diffraction By Vector Summation

  1. Dec 26, 2013 #1
    Can someone help me with these parts of this demonstration?

    http://demonstrations.wolfram.com/RepresentationOfDiffractionByVectorSummation/

    0. Can you define the variables in the model (e.g. s,e, lambda, a, b, z)

    1. Where does he get the derivation for phi[i,x] ?

    2. Why is delta phi[i,x] needed?

    3. I found that zeiger is the "pointer model" in german: http://de.wikipedia.org/wiki/Zeigermodell
    but I don't know how it is derived. I don't know how to interpret it...

    4. Why is amp[_x] summed over i = 1 to n ? I can see that the diffraction pattern is given by amp[_x] but I don't understand how the length and rotation of the quantum clock is defined by "zeiger".

    Here is the source code preview:
    http://demonstrations.wolfram.com/s...esentation of Diffraction by Vector Summation


    Thank you SO much!
    -J
     
  2. jcsd
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