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How do Polarized Sunglasses work?
There are two types of waves. They are longitudinal waves and transverse waves. (Kettering) Longitudinal waves need a medium to travel through. They are the compressions and rarefactions of the medium the wave is traveling through. Longitudinal waves are composed of sound and seismic waves. Transverse waves do not need a medium to travel through. Some transverse waves are water waves, waves on a string, and electromagnetic waves. (Peck)
By Marc S.
Introduction to Types of Waves
Polarized filters are hard to understand and are not very easy to describe either. Polarized filters are conceptually a wall with a pattern of vertical slits. One way to think of it is that a beam of light is in three dimensions. After the beam passes through the wall, the beam is reduced to two dimensions because it has to fit through the wall with the small horizontal slits. After the light beam is reduced to two dimensions, there is little or no glare seen through the glasses. Most reflected light is in horizontal beams. That is why the slits are vertical. They block out the horizontal waves. (Light)
Polarized Filters
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