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Revising 25 years of chemistry

Lasers, sunscreens and free radicals

To resist photo-damage by sunlight, a molecule must quickly disperse the energy from ultraviolet (UV) radiation via heat to the surroundings. By understanding how this happens, chemists can select or design innovative molecules that are resilient to solar radiation and can be used as effective synthetic sunscreens

This article links to the following topics in the AQA, Edexcel, OCR, WJEC, CCEA and SQA exam specifications:

• DNA and base pairs

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Revising 25 years of chemistry

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