The Q of Helmholtz resonators is derived here: https://en.wikibooks.org/wiki/Acoustics/Flow-induced_Oscillations_of_a_Helmholtz_Resonator
Some Q measurements of bottles are described here: https://math.dartmouth.edu/archive/m5f10/public_html/proj/ArainGolvach.pdf -- Bill Byrom N5BB On Sat, Dec 9, 2017, at 01:39 AM, Hal Murray wrote: > > [email protected] said: > > The flex hose demonstration was interesting in that different regimes of > > swinging speed resulted in oscillation in different modes. I wonder why. > > It depends on the speed of the air going through the tube. > > https://www.youtube.com/watch?v=4aJ36-TlPD4 > > http://www.exo.net/~pauld/activities/AAAS/aaas2001.html > http://www.exo.net/~pauld/summer_institute/summer_day13music/Whirly.html > > > -- > These are my opinions. I hate spam. > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
