The photoelectric effect is the emission of electrons when a metal is illuminated or "hit" by light.
It is a one-for-one trade off. One photon for one electron.
Electrons that are emitted via photoelectric effect are called photoelectrons
In order for an electron to be released (photoemission to occur) the light hitting the metal must have a minimum frequency.
This minimum frequency is called the "threshold frequency".
If the incident light's frequency is BELOW the threshold frequency required by the metal, an electron will NOT be released. Rather, the incident photon will be absorbed. |