http://ift.tt/eA8V8J
Why do paper clips bend? What makes elastic stretchy? A scientist examines the ubiquitous substances we take for granted.
via NYT > Books http://ift.tt/1plfyru
Why do paper clips bend? What makes elastic stretchy? A scientist examines the ubiquitous substances we take for granted.
via NYT > Books http://ift.tt/1plfyru
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