miaf3503 miaf3503

26-04-2017
Chemistry

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Zinc oxide helps protect the lifeguards from damaging UV sunlight. How does this cream protect from the UV rays of the Sun?

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algaustad algaustad

26-04-2017

it reflects sunlight. It's a physical barrier (in comparison to some sunscreens which are chemical blocks). Sunlight is mostly white light and zinc oxide reflects white light

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