Water Resonance Tube

This experiment consists of a clear plexiglass tube of water with a speaker mounted over the tube. The level of the water can be adjusted by moving the reservoir on the right. As the water level changes the size of the air column that vibrates with the sound of the speaker changes. The quarter and three quarter wavelength resonance points for a pipe closed at one end can be clearly heard and the speed of sound calculated based on knowing the input frequency and the length of the tube at resonace.

Pira DCS # 3D30.10

Water Resonance Tube   Function Generator/Amplifier