> You start as low as go can and sweep slowly upwards until you suddenly > hit a resonance of quite startling intensity.
Neat. Thanks. The Exploratorium has a linear version. It's an amazing toy. (They call it an exhibit.) It's a hollow tube, 3m dia, 20m tall. Rather than sweep the frequency, they have a xylophone tuned to several resonant frequencies. It's one of these columns: http://www.isle.org/~sbay/images/exploratorium.jpg Good description: http://www.exo.net/~pauld/summer_institute/summer_day11sound/sound_column.ht ml -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
