What do purple traffic lights mean?

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Tevin Tillman asked a question: What do purple traffic lights mean?
Asked By: Tevin Tillman
Date created: Fri, Jul 2, 2021 4:28 PM
Date updated: Mon, Aug 29, 2022 5:46 AM

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But when ultraviolet light illuminates the surface, the dye molecules bend into a banana shape and the liquid crystals scatter into random orientations, clogging the tunnel and blocking gas from penetrating…

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