Re: [Phys-l] [tap-l] sprinkler

[Richard Berg <reberg@physics.umd.edu>]

Tony,

Ours works very well with either water (using siphon action) or air from a 
small air track blower.  unfortunately, we made it here so you will not be 
able to buy one.  See:

http://www.physics.umd.edu/lecdem/services/demos/demosd3/d3-22.htm

It has very low friction, so it shows important details of both the 
normal and the inverse sprinkler action.

Dick

On Wed, 14 Nov 2007, Anthony Lapinski wrote:

> I want to illustrate Newton's third law by blowing into a lawn sprinkler.
> I ask this as a theoretical question to my students, but I want to see if
> it works in practice. So I am looking for a rotary sprinkler (preferably
> new) with low friction. Not sure if one exists that will move with only
> air going through it. I've checked on ebay, and local stores have low
> selection. Anybody ever try this? Does anyone know of a brand/type that
> might work for this demo?

***********************************************************************
Dr. Richard E. Berg, Professor of the Practice
Director, Physics Lecture-Demonstration Facility
U.S. mail address:
Department of Physics
University of Maryland
College Park, MD 20742-4111
Phone:  (301) 405-5994
FAX:    (301) 314-9525
e-mail  reberg@umd.edu
www.physics.umd.edu/lecdem
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