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General Science / Re: How does strong sunlight cause colours to fade?
« on: 22/05/2018 09:57:33 »
Energy from the photons is transferred to the electrons which form the chemical-bonds in the dyes, see ... https://en.wikipedia.org/wiki/Photodegradation
https://en.wikipedia.org/wiki/Photodissociation
https://en.wikipedia.org/wiki/Photodissociation
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