This is a nicely seasoned video of a resonance experiment.
"Resonance is a phenomenon in which a force is applied repeatedly at the natural frequency of a system and large amplitude oscillations result"
*Note - Frequency of the beaker...
Resonance is a powerfully, underestimated phenomenon.
Lots of things can happen when you add resonance
Everything has a resonance frequency and many beneficial secrets are lost to information suppression...