Amazing Resonance Experiment!
Why Physics Stack Exchange recommends it
Physics Stack Exchange users link it as a clear visual example of Chladni patterns and standing waves when asking about the theory behind them.
Recommended by 0 people across 0 different months, 2013 to 2017.
What it is
A short demonstration by YouTuber brusspup of the Chladni plate experiment, in which sand on a metal plate driven by a speaker settles into geometric patterns as the tone frequency rises. Equipment was supplied by PASCO scientific, and the pattern gets more complex at higher pitches.
What people said
Cites Beni Bogosel · 2013-12 · Physics Stack Exchange · on “Theory behind patterns formed on Chladni plates?”
In this video [this video] of vibrating Chladni plates [LINK] we can see small sand particles align themselves into different interesting patterns (also shown in the image below) which correspond to some particular vibrations. What is the theory behind this fact? Are the patterns created related to the Laplace eigenfunctions of the shape? If yes, how are they related, and what importance has the source point of the vibration?
Cites Christopher Gaston · 2016-12 · Physics Stack Exchange · on “What is the effect of a pair of different sounds or frequencies upon an object?”
Another example I saw was of cymatics where resonating a Chladni plate with sand salt on it to create standing waves at different frequencies. [this video] Again, it is only a single tone. How would it react differently if it had two tones which were a minor third apart?
Cites Cort Ammon · 2017-04 · Physics Stack Exchange · on “Motivation for doing classical mechanics”
So I second P.C. Spaniels argument about the gyroscope. I'm pretty sure gyroscopes are actually aliens, and that's after watching the brilliant VSauce video [LINK] on the topic. The reason it seems like all physics does for you is formalize intuitive things is because you're just starting. We intentionally start with intuitive things because it is more comfortable for people. We could start with the surface effects of ferofluids, or flow separation over turbine blades, but why confuse people? Your intuition will get you far, especially if it's good, but at some point you're going to hit limits. At some point you're going to want to have the formalisms to help you convert the things you are l