Qauntum Flashcards
1
Q
Photon
A
A quantum/lump/unit/packet/ particle of (e-m) energy/light
2
Q
Electronvolt
A
an eV is the energy acquired by an electron accelerated/moves through a p.d. of 1 V
1 eV = 1.6 x 10-19 J
3
Q
Threshold frequency
A
The minimum frequency of electromagnetic radiation that will eject electrons from surface of a metal.
4
Q
Work function
A
the minimum energy (required) to release an electron (from the surface of the metal)
5
Q
DeBroglie wavelength
A
Electrons are observed to behave as waves/show wavelike properties,where the electron wavelength depends on its speed/momentum
6
Q
Line Spectrum
A
light emitted from (excited isolated) atoms produces a line spectrum a series of (sharp/bright/coloured) lines
against a dark background
