Who invented the sun glasses?
The 12th century is when sunglasses were invented properly, in China. They were using lenses made from imperfection-heavy quartz to block out the light from the sun, and primitive frames to hold them against the wearer's face. These sunglasses didn't protect against harmful UV rays or help their wearer to see any better (in fact, they made it very difficult to see), but they provided some relief from having the bright sun constantly shining into their eyes. Only the rich had them, but they found many uses for them - Chinese rulers and judges, for example, found that they could use the sunglasses to hide the expressi ...more