Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > sci.physics > #523644
| 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> |
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 | Next — Previous in thread | Find similar | Unroll 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