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15 Cards in this Set
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are light waves in which the vibrations occur in a single plane, or light waves which vibrate in only one direction or phase. |
Polarized light waves |
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A light wave that is vibrating in more than one plane is referred to as |
unpolarized light |
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is an optical device that can convert an unpolarized light wave into a polarized light wave by blocking all other vibrations. |
polarizer |
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is an optical device used to determine whether the light is plane-polarized or not |
analyzer |
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Waves wherein the movement of the particles in the wave is perpendicular to the direction of motion of the wave. |
Transverse Wave |
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The particles of the medium travel in the direction of motion of the waves. |
Longitudinal Wave |
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orientation of the wave vibrations in each rope. |
The oscillations in one rope are in a vertical plane and are said to be vertically polarized. Those in the other rope are in a horizontal plane and are horizontally polarized. |
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If a vertical slit is placed on the first rope, the waves pass through. However, a vertical slit blocks the? For EM waves, the direction of the electric field is? to the disturbances on the ropes. |
horizontally polarized waves. analogous |
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In linear polarization, the electric field of light is limited to a single plane along the direction of propagation. |
Linear Polarization |
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There are two linear components in the electric field of light that are perpendicular to each other such that their amplitudes are equal, but the phase difference is π/2. |
Circular Propagation |
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The electric field of light follows an elliptical propagation |
Elliptical Propagation |
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states that the intensity of plane-polarized light that passes through an analyzer varies as the square of the cosine of the angle between the plane of the polarizer and the transmission axes of the analyzer. |
Malus law |
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The intensity (I) of polarized light after passing through a polarizing filter is usually measured in? |
W/m² (watt per square meter) |
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The light intensity, which passes through the ideal polarizer can be calculated as: |
I = Io cos²θ |
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Malus’ Law Formula |
Point 1 – When unpolarized light passes through a polarizer, the intensity is reduced by a factor of ½. The transmitted light is polarized along the axis of the polarizer. Point 2 – An ideal polarizing filter passes 100% of incident unpolarized light, which is polarized in the direction of the filter’s (Polarizer) polarizing axis. From point (1) and point (2), we can assume I = Io cos²θ |
