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: I don't understand how to get the temperature from this graph?

  1. Nov 5, 2013 #1
    This is an experiment on plasma control. A graph of current against voltage is drawn on a semi log paper. From this graph, we can get the electron temperature (measured in eV). The method is shown in this picture, but I don't understand it at all. Can someone please explain it to me?

    Attached Files:

  2. jcsd
  3. Nov 6, 2013 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Not my field but looks like they picked two points separated by a factor of 270uA/100uA = 2.7 = e on the vertical scale for convenience.... ln(e)=1

    Something like that anyway.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted