H3-51
Demonstrate standing waves in a stretched wire and to demonstrate Mersenne's first and second laws.
The tensions in two stretched wires can be separately adjusted, creating different fundamental frequencies. Stops can be inserted along the wire to observe the frequency as a function of length, or to show the frequency ratio between two similar wires with the same tension but of different lengths. Note: this is easier to use than the sonometer with weights, but the tension cannot be measured quantitatively.
OS0