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28kHz standing waves and diffraction schlieren demo [message #94049] Sat, 17 July 2021 10:28 Go to previous message
grindstone is currently offline  grindstone
Messages: 29
Registered: May 2010
Chancellor
Not so pi-specific, but I think I've watched Wayne post the phrase "standing wave" more times than anyone on the web so thought to post here.

https://www.youtube.com/watch?v=VrgyKFBPQW4

Part 3 is a bit cooler when he levitates some balls in the standing wave. The temperature/density refraction thing is cool, too. Well, it's all more interesting than doing my Saturday work list... Part I starts here if you want the start -- that's the sort of room acoustics demo Smile
https://www.youtube.com/watch?v=MBPh410Gnes

Almost makes a guy miss school. Hope everyone is well!
 
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