3D40.50 Singing Wine Glass
Excite a goblet by rubbing a wet finger around the edge as you vary the water level in the goblet.
The reverse is also true. Submerge the goblet in in a bucket of water and listen for the note to change.
Tip: Wash your hands well with soap and water till they’re squeaky clean.
Location: Wine Glass U1-6, Bucket on the floor next to U1
Reference:
Inverted glass harp
Daniel B. Quinn and Brian J. Rosenberg
Phys. Rev. E 92, 021003(R) – Published 17 August 2015