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By Djenane Beaulieu, Buzz60 We finally have an answer to the age-old question of why our shoelaces keep coming undone soon after we've tied them -- thanks to science, of course.
Traditional shoelaces were made of leather, cotton, jute, hemp, or other materials used in the manufacture of rope. Modern shoelaces often incorporate various synthetic fibers, which are generally more slippery and thus more prone to coming undone than those made from traditional fibers. On the other hand, smooth synthetic shoelaces generally ...
Close-up of a shoelace knot. The shoelace knot, or bow knot, is commonly used for tying shoelaces and bow ties.. The shoelace knot is a doubly slipped reef knot formed by joining the ends of whatever is being tied with a half hitch, folding each of the exposed ends into a loop and joining the loops with a second half hitch.
Greeper laces are a novel form of shoelace which have fasteners and stops to prevent them from becoming undone. They were invented by London optometrist Peter Greedy who spent six years developing the product and then launched it in 2009 at a footwear trade show in Düsseldorf.
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The discovery of all possible ways to tie a tie depends on a mathematical formulation of the act of tying a tie. In their papers (which are technical) and book (which is for a lay audience, apart from an appendix), the authors show that necktie knots are equivalent to persistent random walks on a triangular lattice, with some constraints on how the walks begin and end.
A shoe belonging to a child and dating back more than 2,000 years has been unearthed in Austria with its laces still intact.
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