Hacker News Reader

I remember a Google talk where Randall Munroe talked about working with his Professor for hours on a solution to this problem.

http://xkcd.com/356/

Physicists are two points, mathematicians three. :-)

It was this one, starts at around 15 minutes.

http://www.youtube.com/watch?v=zJOS0sV2a24

Very good talk overall.

The whole website http://www.mathpages.com/home/ feels like euler project times itself

Indeed. Just a few looks and I realized that I needed to stop until I get home. I know I won't be getting much sleep tonight.

I remember getting this as a homework problem in an undergraduate EE course. (bastards!) Only years later did I find out how to actually solve it.

Could be worse...I got this question on a mid-term in my Intro to Circuits class. The mathy folk all thought the test was awesome, and the systemsy folk all thought the professor was a jerk. :P

i had it as a homework in physics. and another similar of a cube with capacitors at each edge.

Luckily the grid tends to infinite resistance in the limit.

Also interesting ->

Infinite grid of capacitors (tends to 0 at infinity):

http://arxiv.org/pdf/0905.0054.pdf

Infinite sphere resistance (tends to infinity):

http://physics.stackexchange.com/questions/48439/resistance-...

Infinite Grid of Resistors