HERE'S HOW
Unfold one paper clip to use as a tool. Rest another paper clip on the tool. Gently lay the clip flat on the water, then remove the tool. The paper clip should float.
WHY?
Water holds together at its surface with a kind of rubbery "skin." This tendency of a liquid to form a skin, called surface tension, is what keeps the paper clip up.
AN ICE IDEA»
Illustration by David Bamundo
Text by Julie Vosburgh Agnone
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