Modern Physics Flashcards
(4 cards)
1
Q
Photoelectric Effect
A
The emission of electrons from a metal when electromagnetic radiation of high enough frequency (or low enough wavelength) falls on the surface
2
Q
Threshold Frequency
A
Minimum frequency of light needed to eject electrons from the surface of the metal
(above green emits electrons)
3
Q
Photon
A
A particle of pure energy that has momentum
4
Q
Work Function
A
The amount of energy needed to eject an electron from the surface of a metal
