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How to grow a rainbow at home

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Is it possible to grow a rainbow at home without leprechauns? Learn how with this video! Equipment: paper towel, water-based markers, water, Petri dish, paper clip, thread. Use some markers to draw the beginnings of a rainbow on a paper towel. Use a paper clip and some thread to suspend the paper towel above a Petri dish. With the addition of water, your rainbow begins to inch towards the sky! A material is considered “wettable” if it interacts with water more strongly than water molecules interact amongst

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