How can you tell if a pair of sunglasses is polarizing or not?
by 
asrahfatin
ANSWERS: 4
-
I always wear Polarized Sun glasses, and buy them at Sunglass Hutt at the Mall. It states on them, whether they are polarized or not, or you must ask the clerk. They also sell them in nearly every eye glass facility. If you have a pair and not sure, just look into the sun. If you have to squint, then they are not polarized
-
If you are purchasing new sun glasses and want polarized lenses, take 2 pair and hold one with the ear pieces in the normal way they would be worn and put the others in front or behind cross ways and look through both sets of lenses.. there should be no light coming through them. You can test this by moving one set or the other to the same angle to where they match and the light will come through. (This only works with polarized lenses on BOTH pair of sun glasses).
-
Let me just add a little to my brother's answer. He noted that most of the glare coming off of surfaces is horizontally polarized. So, polarized sunglasses are polarized to cut out this glare. Therefore, a test that you can conduct with one set of sunglasses, is to go outside and look for some glare coming off of a horizontal surface. (This is easiest to do shortly after sunrise or shortly before sunset looking at where the light is reflecting off of a road surface.) While holding the sunglasses in front of your face, look through one lens and rotate the glasses. Does the amount of glare that you see change as you rotate? If so, then you have polarized lenses. If not, then you don't.
-
Just put the glasses on and look at a computer (LCD) screen. Slowly tilt you head each direction, if they are polarized, you will see the screen get darker and lighter as you tilt your head and there may be a point where you will not be able to see the screen at all
Glenn Blaylock RELATED QUESTIONS
Copyright 2023, Wired Ivy, LLC