Regarding the thread:
My question is considered off topic and was put on hold. Why?
Probably it seems like "fix my homework", but:
- I invested quite an effort, including a descriptive image which I created.
- I asked regarding a specific physics concept which is normally solved with the Method of image charges. So, in contrast to most students, who simply hear a proof and nod for agreement - I tried to prove it - to actually show that it works! How on earth that could be bad for this site? I didn't need to do this for the homework - I simply wanted to see how the proof works.
Really, don't you think you're overreacting?