2.6 Wave-Particle Duality Flashcards
1
Q
What can be explained by the wave model?
A
- Polarisation
- Diffraction
- Electron diffraction
- Interference
2
Q
What can be explained by the particle model?
A
- Photoelectric effect
- Emission spectra
- Absorption spectra
- Fluorescence
3
Q
What can be explained by both the wave and particle model?
A
- Reflection
- Refraction
4
Q
What experiment is done for interference?
A
Young’s double slits
5
Q
What experiment is done for diffraction?
A
Diffraction gratings
6
Q
What experiment is done for polarisation?
A
2 polarising filters
7
Q
What is electron diffraction?
A
- Electrons are accelerated and incident on metal foil / carbon film / crystal structure in a vacuum.
- Electrons diffract (when passing through film/foil/structure) and an interference pattern is set up on the fluorescent screen.
- Where there is constructive interference, concentric rings observed.
8
Q
What is the meaning of the de Broglie wavelength?
A
The wavelength of a matter wave associated with a moving mass.
