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| Question | Answer |
| Plane of polarization diagram: |
Image:
Image1 (image/jpeg)
|
| Only what kind of waves can be polarised? | Transverse |
| Light from the sun and any kind of light source is..... | Unpolarized |
| How is polarization of waves achieved? | Passing the wave through a polarizing filter which only allows the waves oscillating in a single plane to pass through (e.g. horizontal and vertical plane) |
| Define Polarization. | The attenuation (reducing) of transverse waves oscillating in a particular orientation |
| Visible light can be polarized by.... | Using a Polaroid (polarizing filter) Reflection Scattering |
| Diagram of polarization: |
Image:
Polarisation3 (image/gif)
|
| What does "the transmission axis of the second sheet" refer to? | If light is passed through a Polaroid and then a second Polaroid, the amount of light passing through will depend on the orientation of the second filter |
| What is Malus' Law? | Intensity = Initial Intensity x cos^2 θ (θ = angle between filter and plane polarization) |
| Also, light is polarized when it is.... | Reflected by a transparent object (e.g. glass) (IMPORTANT : Note it will only be partially polarized, but at an angle specific to the material, all light will be polarized) |
| Uses of Polarization: | 1. Sunglasses to reduce glare 2. Polarizing filters for photographers 3. Stress-strain analysis |
| Sunglasses Diagram: |
Image:
Sunglasses (image/gif)
|
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