The Sound of those Buzzing Magnets

You know those magnets that buzz when you throw them in the air? Why do they make that sound? In this video, we'll learn about magnetism, inelastic collisions, the geometric series, and the short-time Fourier transform and spectrograms.

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0:00 Intro
1:02 Modeling Magnetism
3:03 Collisions
4:09 Finding the Frequency
7:59 Audio

Thank you to Caleb Birtwistle for captioning!

You can try the code I used here: https://drive.google.com/drive/folder...

Models of magnets: p.2-5, http://www2.fisica.unlp.edu.ar/magnet...
Coulomb's original paper: https://www.ifi.unicamp.br/~assis/Cou...
Inelastic collisions: https://phys.libretexts.org/Courses/M...
STFT and other time-frequency transforms: https://arxiv.org/abs/2101.06707