Date: Tue, 19 Nov 2002 10:22:37 -0500 (EST)

Author: Richard Berg

Subject: Re:vortex cannon


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