When a string that is fixed at both ends freely vibrates stationary waves are produced.To demonstrate stationary waves the string is attached to a vibrator at the one end and passes over a pulley and is attached to a weight at the other end to keep the string in tension.As the frequency of the vibrator is increased, different stationary wave patterns are seen.
Stationary waves are formed when the frequency is f, 2f, 3f ...etcThe length of the vibrating section is given by:
Stationary waves are formed when the frequency is f, 2f, 3f ...etcThe length of the vibrating section is given by:| L | = | mλ 2 |