Date: Thu, 28 Jun 2001 14:06:35 -0700 (PDT)

Author: William Beaty

Subject: Re: water waves perpendicular to the piston


On Thu, 28 Jun 2001, Richard Berg wrote:

> This may be related to soliton type waves that can be readily generated in
> a long water container. Here also the wave frequency is a fraction
> (1/2) of the driving frequency. They are fairly complicated, but a
> qualitative idea can be gleaned from our demonstration:
> Dick Berg

Bingo! The "waves" I'm seeing are no doubt closely related to the
solitons in your demo, the main difference being that I'm only providing
one "wall" rather than two. By Method of Images, couldn't we say that
your demo actually produces an infinite row of soliton waves? The
oscillating foam bat only produces a row of four or five of them, with
bigger ones in the middle of the bat, and smaller ones at the ends.

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