Date: Tue, 19 Nov 2002 11:14:32 -0500

Author: "Jason St. John"

Subject: Re:vortex cannon


Provided we don't mind overlap. And we wouldn't.

Jason St. John 617.353.2634
Boston University Physics Lecture Demonstrations

On 2002-11-19.10:48 sent:

Thanks for the responses, folks.

Should we add a new category to the Bib called "Demos for Public Shows"?

At 10:22 AM 11/19/2002 -0500, you wrote:
>I think that the fall into disrepute(?) of the vortex cannon had a lot to
>do with changes in the general physics curriculum over the past thirty
>years. Back in the 1960s fluid mechanics was a more important part of the
>curriculum, and even the subject of a large number of film loops. We
>obtained a large library of films illustrating fluid flow, including fluid
>vortexes, during the early 1970s. Promptly thereafter this topic was
>excised from the general physics curriculum in favor of more
>"contemporary" topics, such as sub-nuclear particles, superconductiviety,
>etc. The same thing happened a bit earlier with respect to sound.
>Dick Berg
>Dr. Richard E. Berg, Director Phone: (301) 405-5994
>Lecture-Demonstration Facility FAX: (301) 314-9525
>Department of Physics e-mail
>University of Maryland
>College Park, MD 20742-4111

Gerald Zani e-mail:
Manager of Demonstrations phone: (401) 863-3964
Department of Physics FAX: (401) 863-2024
Brown University Providence, RI 02912-1843 USA


Do a little more of that work which you have confessed to be good,
Which you feel that society and your most Just Judge rightly demand of you.
Cultivate the tree which you have found to bear fruit in your soil.
If you have any experiments you would like to try, try them.
Now's your chance.
Henry David Thoreau, Journal entry, 1850.