At other angles light will pass through both changing

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Unformatted text preview: example, when light reflects off of surfaces it is partially polarized. Some sunglasses contain polarizing filters which helps to block glare (such as the glare that is noticeable when looking out over a lake on a sunny day). Polarized Light Glare Continued Continued Polarized Light (cont.) Unpolarized light propagates in all orientations. No particular orientation is preferred. When it passes through a filter that only allows vertical components of electric fields to pass, its intensity is cut in half. This is because, on average, the light is “half horizontal and half vertical” in terms of electric field components. All horizontal components are blocked, making the resulting polarized light half as bright. Now, imagine that you place another filter that is perpendicular to the direction of the first one, i.e., a filter that only allows the horizontal components of electric fields to pass through. This would completely block the remaining light. Thus, any two perpendicular filters will block all incoming light. Suppo...
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This note was uploaded on 11/17/2011 for the course PHYS 121 taught by Professor Burgeson during the Fall '11 term at BYU.

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