The resonant frequency of a wine glass refers to the natural frequency at which the glass vibrates when struck or excited. This is determined by the size, shape, and material of the glass.
As you fill a wine glass, the resonant frequency decreases. This is because the added liquid changes the mass and distribution of the glass, making it stiffer and less prone to vibration.
The sound produced by a wine glass will also change as it is filled. As the resonant frequency decreases, the sound produced will become lower in pitch and quieter. This is due to the decreased vibration of the glass.
No, there is not a specific amount of liquid that will completely eliminate the resonant frequency of a wine glass. The resonant frequency will continue to decrease as the glass is filled, but it will never reach zero.
Yes, the resonant frequency of a wine glass can also be affected by temperature, humidity, and external vibrations. These factors can alter the size, shape, and material properties of the glass, therefore changing its resonant frequency.