2024-11-09

[public] 549 views, 49.0 likes, dislikes audio only

AlphaPhoenix

I finally rebuilt a project from 13 years ago… except this time I have a high speed camera! Today we're exploring waves, and how VERY careful timing of those waves can build into resonance. I've got a bunch of fun high-speed demos of waves on strings, many of which certainly fell into the "man I really just wanted to see this work, but now that I have it, it will be a great video" category :D

There's also a section on the Mythbusters' incarnation of "Tesla's Earthquake Machine", and why they weren't able to use resonance to bring down a steel truss bridge. The key is ALWAYS tracking the energy, but this time, we also see where the simple resonance model breaks down, and when you would need to bring out the big math ._.

So many demos demonstrate standing waves, but my goal here was to film the transient - I wanted to be able to show how those standing waves form - what does a SINGLE wave look like if you use it to build resonance? I honestly gained a much better understanding of standing waves after seeing this high speed footage, and I hope you do too!

Hope you enjoy!

Massive thanks to my top Patreon supporters!

birdiesnbritts

John Sosa Trustham

Vladimir Shklovsky

Aloysius Sparglepartz

Jason Whatley

Lohann Paterno Coutinho Ferreira

Jeffrey Mckishen

nothings

Eugene Pakhomov

Glenn Willen

R520

Nick F

Mirko Rener

Chris Connett

Tyler Filla

Miles Freeman

Benjamin Manns

MPG

Seth Reuter

Danny Thomas

Toby T

Lucy Fur

tiaz

David Antoš

Chris Duvarney

Nick Wage

John T

Jack Serrino

Ethan Sifferman

0:00 Building resonance with a DIY wave machine

3:14 Resonance is sensitive

5:24 MULTIPLE waves on a string?

11:00 Standing wave hero shot

12:15 Tesla's Earthquake Machine

13:54 Exponential decay

16:29 Breaking stuff costs energy

18:06 How do waves TRAVEL on strings?

20:29 When the simple model fails - big waves

25:07 Wrap up - Tacoma Narrows

Media Credits:

I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/

Ravenswood Bridge, Analogue Kid, Creative Commons Attribution license

https://commons.wikimedia.org/wiki/File:Ravenswood_Bridge-edit.jpg