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: QM question

  1. May 1, 2006 #1
    A wave function psi = 3i|up> + 1|down> corresponding to the spin of the electron.

    If I want to draw the distribution of the measured outcome, do I do the following?


    Probability of spin up = 0.9

    Probability of spin down = 0.1

    So I would draw a bar graph showing that spin up has a value of 0.9 and spin down have a value of 0.1. Is this right?
     
    Last edited: May 1, 2006
  2. jcsd
  3. May 1, 2006 #2

    nrqed

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Yes. Since it is a discrete variable, the only way to plot the probabaility distribution is as a bar chart.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook