The Clink: Acoustic Resonance of a Toast Glass

A toast glass's ring is real thin-shell acoustics: its wall thickness, bowl radius, height and material set a natural resonant frequency the same way they do for a bell, and clinking it excites that frequency as an elliptical "breathing" oscillation of the rim. This simulator builds a live glass from those four real parameters, computes its fundamental frequency from thin-shell vibration theory in real time, and lets you click the glass to hear — via genuine Web Audio synthesis — and see the exact pitch and mode shape those parameters produce, including the well-known trick of retuning a glass by adding liquid.