SOURCE:mashable.com
When your shoelaces comes untied, the thought that probably pops in your brain is: "Ugh, that"s annoying. Guess I"ll retie my laces now."
But to mechanical engineers, this tedious occurrence represents a scientific black hole. Why do shoelaces shake off their knots, and. view full post
Thursday, 13 April 2017
Here"s why your shoelaces annoyingly come undone
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