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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They have a chemical in them that darkens when exposed to UV light. That’s why they react to sunlight and not indoor lights. UV beads you may have seen work the exact same way.
Glass also blocks most UV, so that why they don’t work through windows.
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