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What are those blue dots on coin cell batteries? The real story behind them
mardi 26 novembre 2024, 18:22 , par BoingBoing
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Yesterday a redditor named joshcam posted a photo of a coin cell battery with purple colored dots arranged in three concentric semicircles. They posted: To the naked eye, these dots are an iridescent, deep purple, the kind of purple you see when you look at a black light. — Read the rest The post What are those blue dots on coin cell batteries? The real story behind them appeared first on Boing Boing.
https://boingboing.net/2024/11/26/what-are-those-blue-dots-on-coin-cell-batteries-the-real-story-beh...
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dim. 29 déc. - 01:39 CET
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