Quote:
Originally Posted by grav
The math is right,
|
I don't think it can be right if it produces infinities, even if only for
the unrealistic case of zero thickness. I suspect that the added
calculations for points out of the plane are partially masking the
error which is apparent at zero thickness.
Quote:
Originally Posted by grav
The infinity is for the edge of a flat disk plane of uniform density, not
one with some thickness,
|
If it happens at the edge, it should happen everywhere. I suspect
that in the interior, the error in one direction is masked by the error
in the opposite direction.
Can you describe how the infinities come about in your program?
Does your program actually calculate the attraction between a mass
at one point and the same mass at the same point?
Or does it
calculate attraction between masses at two points that are very
close together? Or what?
-- Jeff, in Minneapolis