wine glass. harmonica related?
you know when you rub your finger around a glass and it produces noises when water is in the glass (or wine glass); why are different sounds produced when you add different amounts of water to the wine glass? does the note go higher when less water is added or lower?! does the note go higher or lower when the more water is added?
Iceberg
on November 30th, -0001
You don’t need water in the glass to make the sound, just to do the tuning. The glass is making the vibrations to produce the sound. As you fill up the glass, the part that can vibrate freely gets shorter and the pitch gets higher, just like a guitar string. The same thing would happen if you cut the rim of the glass off to make it shorter. Benjamin Franklin liked the sound that the ringing glasses made and invented a way to put a number of different size glasses on a single spindle and spin it so that all you had to do was touch the rim of the glasses as they rotated to make the sound. He called his invention the glass armonica. This instrument is still made and played today.