vncnt asked:


I recently bought a pair of sunglasses that were advertised as being polarized.
How can I ensure that they really are polarized?

Marlene
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Comments

theGeminiWolf . com on 30 July, 2008 at 8:39 pm #

Turn them sideways and if you see light reflected off a surface get brighter or dimmer while turning, then they are polarized.