All About Sunglasses ...
The Visible Light Spectrum and Aviator Sunglasses
When purchasing sunglasses make sure that you know what the VLT (Visible Light Transmittance) of the lenses is. VLT in sunglasses ranges from 9%to over 30%, so make sure that you get the sunglasses...
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Why Do We Need Sunglasses? As a pilot it is easy for me to understand, but everyone who is outdoors under any conditions shoud wear a good pair of sunglasses to protect their eyes.
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