Standing wave

3.6   Standing waves:

1. No direction of motion           No energy transfer         How standing wave looks like?            Position dependent amplitude and envelope           Wavelength          All particles have the same frequency           Does a standing wave have speed?        Nodes have zero amplitude          Antinodes have maximum amplitude           Distance between two nodes          Distance between node and antinode         Phase differences

2. Resultant wave of two 1d waves traveling in the same direction 

3. Generation of standing waves with two travelling waves           Generation of standing wave by reflection of a travelling wave             Phase shift after reflection

4. Standing waves on a string or rope           Harmonics are only  node-node       wavelength = 2L / n       Fundamental frequency       f1= v / 2L              fn = n * f1           Waves on a string-phet 

5. Standing waves in a air column        Harmonics can be node-antinode,  wavelength = 4L / 2n -1        Fundamental frequency       f1= v / 4L              fn = (2n -1 ) * f1         Harmonics can also be node-node or antinode-antinode    

6. Simulation node-node and node-antinode