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Why do they glow sticks glow brighter when heated and longer when cooled?
Question Date: 2012-01-11
Answer 1:

Temperature affects the chemical reaction of the substances inside the glow stick. When the glow stick is heated, the chemical reaction speeds up and more photons are released. If you cool the glow stick, the chemical reaction slows down, and it takes longer to release the photons or light.

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