How Waves Transfer Energy. π λ represents the energy transferred from helical waves with λ k λ to those with λ k λ through nonlinear interactions. To understand this think about how food is passed at a table.

All waves transfer energy but they do not transfer matter. Wave is a common term for a number of different ways in which energy is transferred. The particles bump into each other passing the waves energy along.
To understand how energy and waves work consider two people holding a slinky between them.
Waves are vibrations that transfer energy from place to place without matter solid liquid or gas being transferred. When a wave enters a medium it transfers energy to the mediums particles. Waves are one of the ways in which energy may be transferred between stores. Wave is a common term for a number of different ways in which energy is transferred.