Date: Fri, 29 Oct 1999 15:42:17 -0400 (EDT)

Author: Richard Berg

Subject: Re: Pendulum Waves


The one thing I suggest that we did not do is a bifilar suspension, so the
balls will never interfere with each other. This may be especially
important if you are making a big one. There is a picture of it in
reference 2 of our descriptive page:

Dick Berg

On Thu, 28 Oct 1999, Tim Cook wrote:

> Hello all:
> Say, does anyone know how large the pendulum waves apparatus can be made as
> a practical matter? Any idea Dick(Berg)? I remember hearing somewhere
> fairly recently about a bowling ball sized attempt which flopped, possibly
> due to undesired coupling. I'm thinking of making a good sized one for a
> large display case. Thanks for any comments.
> Tim
> ******************************************
> Tim Cook
> Physics and Astronomy Instructional Resource Team Leader
> Arizona State University
> Department of Physics and Astronomy
> PO Box 871504, Bldg. PS Rm. F470
> Tempe, Arizona 85287-1504
> Phone: 480-965-4020
> FAX: 480-965-7954