A pendlum wave is a popular oscilaltion demonstration where a series of pendula with slightly different periods are arranged so that their movements describe a repeating wave pattern as well. In a simulation, we are less constrained by the physics of a simple pendulum.

 

• Pendulum Wave Machine Simulation by Michael Borcherds

https://www.geogebra.org/m/GFEqqCF7

 

• Periodic Oscillations animation by Don Lynch

https://www.youtube.com/watch?v=fIEG9G9jofI

 

• Fun with Oscillations by B. Surendranath

https://www.surendranath.org/GPA/Fun/FWO/FWO.html