Diffraction & Polarisation Flashcards
1
Q
What is diffraction?
A
When waves look like they spread out as they travel & bend around an object or through a gap in an object
2
Q
If you want diffraction to occur to a small wavelength of light eg, what should the hole be?
A
Small like the wavelength
3
Q
Will diffraction occur if the small wavelength goes through a big hole?
A
No
4
Q
What is polarisations?
A
Is kind of like the orientation of a wave (vertical/horizontal)
5
Q
What polarisation is sunlight?
A
Unpolarised! - it has many polarisations (vertical/horizontal/diagonal etc)
6
Q
How can unpolarised light just have one polarisation?
A
Polarisers that filter specific polarisations
