Standing Waves on a String (Melde's Apparatus) - PRACTICAL - A Level Physics

Setting up the Apparatus00:00:11

The equipment used to set up standing waves on a string consists of a signal generator to control frequency and amplitude, and a vibration generator that oscillates at a set frequency. This vibration generator is attached to a string that passes over a pulley and has a small mass attached to maintain tension.

Generating Standing Waves00:00:47

By adjusting the frequency, progressive waves are sent along the string. These waves reflect at the end, creating standing waves. Increasing the frequency allows for the observation of different fundamental modes of vibration.

Characteristics of Standing Waves00:01:04

Standing waves exhibit points of no movement called nodes and points of maximum displacement called antinodes. The distance between two consecutive nodes is equal to half a wavelength. Higher frequencies result in a greater number of nodes and antinodes, leading to shorter wavelengths and various harmonics.