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Many of us have polarized sunglasses, but how does an optical polarizer actually block light? It has to do with the polarization of electromagnetic waves and the vibration of...
- 6 min
- 457.4K
- The Science Asylum
Mar 9, 2021 · To discover how polarized lenses help us to see better, we have to first understand the nature of light, and how its polarization occurs. Daylight is created through the fusion of atoms in...
- 1 min
- 4.4K
- Younger Optics USA
The useful glare-blocking properties of polarized sunglasses are well-known to just about anyone who goes outside. What isn't so well-known is how they reduc...
- 4 min
- 195.4K
- SciShow
Jan 1, 1970 · Polarization - Photochromatic sunglasses are sunglasses that darken when exposed to light. Find out how photochromatic sunglasses work in this section.
When light reflects from water, asphalt, or other nonmetallic surfaces, it becomes polarized—that is, the reflected light is usually vibrating more in one direction than others. Polarizing sunglasses reduce this reflection, known as glare, but only when the polarizing lenses are oriented properly.
Students learn about the science and math that explain light behavior, which engineers have exploited to create sunglasses. They examine tinted and polarized lenses, learn about light polarization, transmission, reflection, intensity, attenuation, and how different mediums reduce the intensities of various wavelengths.
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This video tutorial lesson explains what polarized light is and how it is different than unpolarized light. The manner is which a Polaroid filter polarizes light waves is described. And the role of sunglasses in blocking the glare caused by polarized light is discussed.