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I am glad that I found this forum. Because I have a little bit trouble with theoretical physics. :yuck:

The problem is the Green function in theoretical electrodynamic.

I try to understand the difference between the Dirichlet Condition and the Neumann Condition.

I understand the mathematic behind this theory, but If possible I would like to picture this stuff for better understanding.

Dirichlet Condition shows a picture with a mirror charge, a real charge and the zero potential between it. So it means G(r,r')=0 and r' is on the surface.

Neumann Condition means dG(r,r')/ dn'= 4pi/F with r' on the surface and F is the whole surface.

Now I can't understand what's the meaning of Neumann condition - not mathematicly but as a picture .

Maybe I misunderstood this theory completely.

I hope somebody knows what I mean and can help me.

thanks a lot

the lost boy

"Mathematics? What is it ? Can I eat it ?"

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# Homework Help: Green function and the boundary conditions

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