IB Physics > Wave Phenomena

STANDING (STATIONARY) WAVES

STANDING WAVE
DOPPLER
DIFFRACTION
RESOLUTION
POLARISATION

Describe the nature of standing (stationary) waves.

Students should consider energy transfer, amplitude and phase
Explain the formation of onedimensional standing waves
super_blue_wave.png
PLUS
super_red_wave.png
EQUALS
super_resultant.png
COMBINED:
Stationary_formation.png
Students should understand what is meant by nodes and antinodes.
stand.png
The nodes are at either end and in the middle; the antinodes between them.

Discuss the modes of vibration of strings and air in open and in closed pipes.
The lowest-frequency mode is known either as the fundamental or as the first harmonic. The term overtone will not be used.
string_fundamental.png
Fundamental frequency/ 1st harmonic of a string

harmonic_1st.gif
string_2_harm.png
Second harmonic of a string

harmonic_2nd
string_3_harm.png
Third harmonic of a string

harmonic_3rd.gif
stationary_pipe_waves.png
Compare standing waves and travelling waves.
stationary_vs_travelling.png
Solve problems involving standing waves