Do Other Nature Waves Exhibit Particle Behavior?

[cosmicraj]

Do any waves other than EMR show Particle Behavior in nature
(Like Sound Waves or Water Waves etc)?

In Photo Electric Effect We have considered that the light as packets of energy?
but it's equation of energy is \hbar \omega (h bar*omega)
and this\omega is the angular frequency of wave.
I could not understand that-If one is trying to explain the particle nature,then he has to explain that phenomenon with the particle properties.
But here Einstein is using the wave properties to explain the particle nature?
Could you please give me the reason Why?

 

[azntoon]

Yes, other kinds of waves, such as sound waves and water waves, can exhibit particle behavior in nature. Sound waves, for example, can travel through the air in the form of discrete packets of energy known as phonons. Similarly, water waves can be composed of discrete packets of energy known as solitons. In the case of the photoelectric effect, Einstein used wave properties to explain the particle nature of light because light behaves like a wave in some situations, such as when it is diffracted. However, light also exhibits properties of particles, such as when it is absorbed or emitted in discrete quanta. This duality of light, between wave and particle properties, is known as wave-particle duality.