# Question #628c5

Jun 6, 2017

#### Answer:

I think you mean the particle model of light...photons?!

#### Explanation:

You have the Photoelectric Effect and the Compton Effect.

In the Photoelectric Effect photoelectrons emitted by the surface of a metal have kinetic energy dependent upon the FREQUENCY $f$ of the incoming photons suggesting the photons have/are "packets" of energy of value: $E = h f$.

In the Compton Effect particles "recoils" after being "stricken" by light as in a collision where momentum is conserved suggesting that light carries momentum as....a particle!