> As far as I remember it always appears due to subtraction of one

> infinity from another.

The Casimir force = -dE/dx, where x is the separation between the

metal plates and E is the ground state energy of the vacuum between

the plates.

By the way, Kasimir is an incorrect spelling. He signed his papers H.

B. G. Casimir which stands for Hendrik Brugt Gerhard Casimir. He

worked for Phillips corporation in Netherlands.

> I hope that in correct theory no such tricks will be used.

>It seems to me that the situation is close to that in claculus at 17-

>18 centuries when such things as

> 1-1+1-1+1...=0=1+(-1+1)+(-1+1)...=1=-1+(-1+1)+...=-1

> and semiempirical results with infinitesimals and infinities were

> widely discussed with heat.

I also hope that a fully correct theory will be developed in my

lifetime. I imagine all sorts of great physics will come from it.