Singing Rod (3D40.20)
Location: 69-R
Concept/Purpose: Standing sound waves.
Procedure/Explanation: The singing rod is a long, thin aluminum rod that is used to demonstrate standing sound waves. Standing waves are generated on the rod by holding it firmly at a
nodal point in one hand then, with some rosin, stroking it firmly between the thumb and
forefinger of your other hand. It may take a little practice at first, but once it is done properly and
the rod is resonating it produces a very clear and audible tone.