Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > sci.physics > #523644

Re: What's the Best Way to Tie Your Shoes? Physics May Have the Answer.

Newsgroups sci.physics
Date 2015-09-28 14:22 -0700
References <YcydnUMbIaAQ3JrLnZ2dnUU7-R2dnZ2d@giganews.com>
Message-ID <81785dc0-3e71-433a-a24a-3aa0f28fa4ca@googlegroups.com> (permalink)
Subject Re: What's the Best Way to Tie Your Shoes? Physics May Have the Answer.
From "reber g=emc^2" <herbertglazier0@gmail.com>

Show all headers | View raw


On Saturday, September 26, 2015 at 6:08:34 PM UTC-7, Sam Wormley wrote:
> What's the Best Way to Tie Your Shoes? Physics May Have the Answer.
> > http://gizmodo.com/whats-the-best-way-to-tie-your-shoes-physics-may-have-1729896581
> 
> 
> > The most common mistake when tying your shoelaces is accidentally
> > making a weaker granny knot instead of the stronger square knot. Now,
> > physics can help you tie the perfect knot that stays tight no matter
> > what.
> >
> > While it is well-known that any knot's strength depends on its
> > configuration, nobody really understands specifically why this should
> > be the case. With a recent paper in Physical Review Letters, a team
> > of physicists has taken an important step forward in unraveling this
> > mystery, boiling it all down to a single equation that predicts the
> > strength and shape of a simple knot.
> >
> > Knots have long been a focus of study for mathematicians in the
> > abstract, but modeling their physical characteristics in the real
> > world is notoriously difficult, even with computer simulations. MIT
> > mechanical engineering researcher Khalid Jawed explained the problem
> > to Gizmodo. "If you tie a knot and study the shape with the naked
> > eye, the twists and turns are fairly complicated," producing a mix of
> > interacting forces. Any mathematical model must account for all those
> > twists and turns, including such variables as tension, friction, and
> > the stiffness of the material -- whether it be shoelaces, rope,
> > headphone wires, nylon, surgical thread, or even folding proteins and
> > DNA.
> 
> -- 
> 
> sci.physics is an unmoderated newsgroup dedicated
> to the discussion of physics, news from the physics
> community, and physics-related social issues.

A knot goes with friction.More friction is good.Two loops make a bow.The Glazirt TWIST comes out with two interlocking loop chain.

Back to sci.physics | Previous | NextPrevious in thread | Find similar | Unroll thread


Thread

What's the Best Way to Tie Your Shoes? Physics May Have the Answer. Sam Wormley <swormley1@gmail.com> - 2015-09-26 20:08 -0500
  Re: What's the Best Way to Tie Your Shoes? Physics May Have the Answer. jimp@specsol.spam.sux.com - 2015-09-27 01:45 +0000
  Re: What's the Best Way to Tie Your Shoes? Physics May Have the Answer. gilber34 <fafa@invalid.com> - 2015-09-26 21:09 -0500
  Re: What's the Best Way to Tie Your Shoes? Physics May Have the Answer. Double-A <double-a3@hush.com> - 2015-09-27 13:15 -0700
  Re: What's the Best Way to Tie Your Shoes? Physics May Have the Answer. "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-09-28 14:22 -0700

csiph-web