3.1.3

superposition: the process by which two waves combine into a single waveform when they overlap

stationary waves: wave pattern with nodes and antinodes formed when two or more progressive waves of the sae frequency and amplitude pass through each other

nodes: positions on a stationary wave which do not vibrate, where there is zero displacement

antinodes: positions on a stationary wave where there is maximum displacement



frequency for first harmonic only:

f = (1/2L)√(T/μ)

where:
 f is the frequency  (Hz)
 T is the string tension (N)
 L is the length of the string (m)
 μ is the mass per unit length of the string (m/l)