Nick is absolutely correct! An increase in pressure causes an increase in
density of most fluids, as noted by Sir
Robert Boyle in 1662. The thing is: air be so light that changes in speed
involve only tiny pressure and density increases, of a few per cent, less than
occurs during a storm
Thanks, Peter, for straightening this out for me.
Tell me more about this seminar you offered?
N
Nicholas S. Thompson
Emeritus Professor of Psychology and Ethology,
Clark University (nthomp...@clarku.edu)
http://home.earthlink.net/~nickthompson/naturaldesigns/
http://www.cusf.org [City