Resonance Apparatus Simple Form

Three Tuning forks are mounted on three wooden resonance boxes dimensions of which are compatible with frequency of the forks to produce a strong sustained tone. Forks are nickel plated with shanks to screw in the bushes on the top of the boxes. Each set supplied with rubber headed hammer.

It consists of a tube 100cm long, 25mm dia mounted on a stand which is fitted with leveling screws. The lower end of the rubber tubing provided is connected to the 500ml glass reservoir which slides on a metal rod and can be raised or lowered for adjusting the length of column of air. It is used to measure the velocity of sound waves in air at room temperature by using a tuning fork.