Post Number: 265
|Posted on Tuesday, 13 May, 2014 - 02:32 pm: |
I can't understand what they're doing in this example in these notes http://www.maths.ox.ac.uk/system/files/coursematerial/2013/2643/1/Appplications2014.pdf
exercise 2.1 page 13.
"Apply Gauss’ Law to a sphere of radius r". Am I firstly right in saying that Gauss' Law is what they've previously described as Gauss' flux theorem?
If so I've only seen them describe Gauss' law for gravitation or charge i.e. you know what phi is. How have they applied it "for such a phi surface integral( gradphi . dS) = 4 * pi * r^2 * dphi/dr
Post Number: 266
|Posted on Tuesday, 13 May, 2014 - 06:26 pm: |
Oh, I've sorted this out. Don't worry.