Flashcards
Polarization
Flashcards do conjunto (12)
- 1Plane of polarization diagram:
- 2Only what kind of waves can be polarised?Transverse
- 3Light from the sun and any kind of light source is.....Unpolarized
- 4How 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)
- 5Define Polarization.The attenuation (reducing) of transverse waves oscillating in a particular orientation
- 6Visible light can be polarized by....Using a Polaroid (polarizing filter)
Reflection
Scattering - 7Diagram of polarization:
- 8What 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
- 9What is Malus' Law?Intensity = Initial Intensity x cos^2 θ
(θ = angle between filter and plane polarization) - 10Also, 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) - 11Uses of Polarization:1. Sunglasses to reduce glare
2. Polarizing filters for photographers
3. Stress-strain analysis - 12Sunglasses Diagram:
