My friend has transition glasses, all I know about them is they transition to dark in the sun. but how do they work? can someone please explain like im 5 years old?
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The lens are coated with a very special compound that is photochromic – meaning that it changes color when it is exposed to UV light. This is a very common thing in chemistry – many molecules react when exposed to UV light.
When UV light hits the compound, it changes shape, and that new shape is darker than the shape than the original shape. After a time without UV exposure, the molecules revert to their original, clear shape.
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