A thorough expaination of how sunglasses work. Discussion of mainly 4 areas: Intensity Reduction, Thin-film Technology, UV Absorption and Polarization.
Sunglasses- Purpose and Design
Sunglasses are becoming more and more popular these days. When picking a pair of sunglasses, the ones which have cool looking and famous brands are the most attracting ones to consumers. People tend to forget the real functions one pair of sunglasses can provide. A good pair of sunglasses should have these qualities:
1. Provide protection from ultraviolet rays in sunlight. Good sunglasses can eliminate UV rays completely.
2. Provide protection from intense …
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…and identically oriented. If light is unpolarized, Polaroid absorbs approximately half of it. Because light reflected from a large flat surface such as water or a wet road is partially polarized, properly oriented Polaroid can absorb more than half of this reflected glare light. This explains the effectiveness of Polaroid sunglasses.
Wearing a pair of good sunglasses is really important. Sunglasses are not fashion, but really something that will help your eyes and prevent eye-diseases.
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