In article ,
Still Just Me wrote:

On Thu, 21 May 2009 21:31:06 -0700 (PDT), someone
wrote:

gravity and magnetism are magic. I'll use magic if it will help.

Reasons for those forces are unknown, all we have are theories on how
they work.

Mathematically, elegantly, and astoundingly accurately.

--
Michael Press

---
pi sqrt{3} [pi sqrt{3} ] 3 \ 1
---------- tanh [-----------] = - / -----------
2 [ 2 ] 2 --- nn - n + 1
0 n