However, the larger the object, the bigger the amplitude of the sound waves required, so it might be a bumpy and dangerous ride: if a person slipped outside their node, they could take a ...

On the other hand, the most severe power loss of 12.7% was recorded in the case of wave amplitude of 0.05 m, wavelength of 1.730 m, and wave frequency of 0.95 Hz.

But as soon as waves reach a certain amplitude, they change their shape and floating particles reverse direction. This way a ping-pong ball can be pulled towards the wave maker.