Quantum Definitons Flashcards
1
Q
Photoelectric Effect
A
Electrons must absorb efficient energy to overcome work function
Individual photons release individual electrons
Shows particulate nature of light
Number of electrons released depends on intensity of light
E = work function + KE max
Instantaneous emission which is not explained by the wave model
2
Q
eV
A
Energy required to accelerate electron through PD of 1V
3
Q
Emission Spectrum
A
Light emitted from excited atoms
Coloured lines, black background
4
Q
Absorption Spectrum
A
Light absorbed from atoms
Dark lines, coloured background
5
Q
De Broglie wavelength
A
Wavelength determined by speed of electron
