pb >>121300
>Here's the Schumann image of/during the big quake
Characterizing a magnetite deposit -- resonance mode(?)
https://ucscphysicsdemo.sites.ucsc.edu/coupled-magnetic-pendulums/

6. Magnetic-Mechanical Oscillator (IYPT 2023)
https://youtube.com/watch?v=tqd2lbA7-bU [Embed]

Graphene ex. as micro model.