AUG 15, 2018 10:00 AM PDT

What's So Special About Polarized Sunglasses?

WRITTEN BY: Daniel Duan

Glare could cause discomfort in the eyes, even disability. To minimize the glare, one can try to reduce overall brightness by putting on a pair of generic sunglasses, or realign the direction of the light using the polarized lenses.

How do polarized lenses work? Light travels in a waveform, and oscillates like waves: side by side, and up and down. Sunlight comes in a so-called unpolarized way, meaning it oscillates in all directions. On all polarized lenses, there is a laminated layer of polymer compounds, which comes in different thickness. This layer acts as a vertical filter that allowing only vertically oriented light to pass through, just like a Venetian blind. The filtered light creates a clearer vision and is safer for the eyes. 

Source: SciShow via Youtube

About the Author
  • Graduated with a bachelor degree in Pharmaceutical Science and a master degree in neuropharmacology, Daniel is a radiopharmaceutical and radiobiology expert based in Ottawa, Canada. With years of experience in biomedical R&D, Daniel is very into writing. He is constantly fascinated by what's happening in the world of science. He hopes to capture the public's interest and promote scientific literacy with his trending news articles. The recurring topics in his Chemistry & Physics trending news section include alternative energy, material science, theoretical physics, medical imaging, and green chemistry.
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