406 () posted 3 years ago by Zeitreise 3 years ago by Zeitreise +407 / -1 123 comments share 123 comments share save hide report block hide replies
Harmonic frequency. Every object has one. Tuning forks.
Like a rattle in your car that may occur at a certain speed.
Yes, the parameter that determines the resonant frequency of an object is simply its diameter/dimensions.