Re: counting balls

["Daniel L. MacIsaac" <Dan.MacIsaac@nau.edu>]

I think this apparatus is also known as "Newton's Cradle" and can be
found under that name at some hobby/knickknack stores.

Dan M

> > The counting balls are those lines of five ball bearings suspended from
> > two rails. Pull n balls off one side (n<5) and realease them, n balls
> > are ejected from the other side after the first n balls collide.
>
> I think this is also called the "Newtonian Demonstrator" or the 
> "swinging balls" demonstration.
>
> Regards,
> Steven Ratliff
>
>
>
>
> Steven T. Ratliff
> Associate Professor of Physics
> Northwestern College
> 3003 Snelling Av. N.
> Saint Paul, MN  55113-1598
>
> Internet:  stratliff@nwc.edu (or str@nwc.edu)