Interference and Diffraction Flashcards
1
Q
Diffraction
A
Where a wave hits a gap or an obstacle and spreads out
2
Q
When wavelength > gap, the is a _______ amount of diffraction
A
Large
3
Q
When wavelength < gap, the is a _______ amount of diffraction
A
Small
4
Q
Features of a single slit diffraction graph
A
- Symmetrical
- Central maxima double the width of of the smaller maxima
- Smaller maxima all have the same width
5
Q
Monochromatic light
A
All has the same wavelength
6
Q
Coherent waves
A
Have the same frequency and wavelength, and have a constant phase difference
7
Q
How can light be made coherant
A
Passing it through a single slit
