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Making the most of glow in the dark thread

HOW DOES IT WORK? We’re all familiar with fluorescent dyes like those used in highlighter pens. These dyes look bright because they take in light of a variety of colours and then transmit it back as a single colour. For example, a green highlighter’s ink absorbs the white light which hits it and shines it all back as an intense green colour. Glow in the dark products take this one step further.

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