How Polarized Sunglasses Work
Light travels as waves through the air.
The waves vibrate in all directions so when the light hits a reflective surface, all the reflected light vibrates parallel to the surface.
An example would be, light reflecting off the surface of water, the road or the bonnet of your car will vibrate in a horizontal direction.
The majority of reflective surfaces that cause glare are horizontal.
Polarized sunnies have polarizing filters set in a vertical direction.
Only light vibrating vertically can get through the filter, everything else is blocked out. 100% of the reflected light is blocked.
The waves vibrate in all directions so when the light hits a reflective surface, all the reflected light vibrates parallel to the surface.
An example would be, light reflecting off the surface of water, the road or the bonnet of your car will vibrate in a horizontal direction.
The majority of reflective surfaces that cause glare are horizontal.
Polarized sunnies have polarizing filters set in a vertical direction.
Only light vibrating vertically can get through the filter, everything else is blocked out. 100% of the reflected light is blocked.