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Re: Magnets repel more weakly than attract

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On 23/06/2016 1:28 AM, omnilobe@gmail.com wrote:
> On Tuesday, June 21, 2016 at 7:57:51 PM UTC-10, Sylvia Else wrote:
> "It's not as if flux is a real thing, it's just an indication of the
> direction and strength of the field."
>
> Flux is real. It is different from gravity and similar in ways. Flux
> penetrates rocks and lithium metal with real effectiveness.
>
> "Clearly, flux lines cannot cross".
>
> A law is born. When matter cuts flux, a generator is possible. Matter
> has area called charge that cuts flux.
>
> "If you're seeing differences in attraction and repulsion, it's just
> because the field of each magnet affects the other magnet. Sylvia."
>
> I am imagining a weaker repulsion because no data is available to
> confirm the difference between magnets that repel or attract. Where
> are the numbers? Where is the formula? I bought a book on linear
> motors and actuators, but they are also trying to figure this out. It
> is complicated and it depends in shape, domains, and surroundings.
> Their formulas are not good enough to answer the questions of a 12
> year old hobbyist. Magnets need more measurements and reports to
> satisfy people who expect better of science than the improvised rules
> of thumb.
>
> Billions of dollars are wasted looking for black holes, dark matter,
> and magnetars, but on Earth, ordinary magnets are ignored. Even a
> basic repulsion fact is just because of a field that is never
> described mathematically in sufficient detail.
>

Consider how a magnet interacts with a non-magnetised piece of iron. The 
field of the magnet causes domains in the iron to orientate themselves 
according to the field. The result is that the magnet attracts the iron, 
which is temporarily magnetised.

Now consider two magnets. When orientated so that they attract, the 
field of each causes further alignment of the domains in the other, and 
that alignment reinforces the field, increasing the attraction.

Now orientate the magnets so that they repel. The field of each reduces 
the field that's orientating the domains in the other. Some of those 
domains lose orientation, reducing the total field. Net result - a lower 
repulsive force than there was previously an attractive force.

So there's nothing to see here. Move along.

Sylvia.

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Magnets repel more weakly than attract omnilobe@gmail.com - 2016-06-21 16:08 -0700
  Magnets repel more weakly than attract john <johnsefton288@gmail.com> - 2016-06-21 16:20 -0700
  Re: Magnets repel more weakly than attract "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-06-21 19:31 -0700
    Re: Magnets repel more weakly than attract omnilobe@gmail.com - 2016-06-21 21:02 -0700
  Re: Magnets repel more weakly than attract Sylvia Else <sylvia@not.at.this.address> - 2016-06-22 15:57 +1000
    Re: Magnets repel more weakly than attract omnilobe@gmail.com - 2016-06-22 08:28 -0700
      Re: Magnets repel more weakly than attract Sylvia Else <sylvia@not.at.this.address> - 2016-06-23 12:07 +1000
        Re: Magnets repel more weakly than attract benj <benj@nobody.net> - 2016-06-23 17:29 -0400
          Re: Magnets repel more weakly than attract Sylvia Else <sylvia@not.at.this.address> - 2016-06-24 10:10 +1000
            Re: Magnets repel more weakly than attract "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-06-24 08:44 -0700
          Re: Magnets repel more weakly than attract Timo <timo@physics.uq.edu.au> - 2016-06-24 15:05 -0700
          Re: Magnets repel more weakly than attract Timo <timo@physics.uq.edu.au> - 2016-06-24 03:36 -0700
          Re: Magnets repel more weakly than attract "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-06-23 16:42 -0700
          Re: Magnets repel more weakly than attract Timo <timo@physics.uq.edu.au> - 2016-06-24 17:56 -0700
        Re: Magnets repel more weakly than attract "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-06-23 15:32 -0700
      Re: Magnets repel more weakly than attract Helmut Wabnig <hwabnig@.- --- -.dotat> - 2016-06-23 07:20 +0200
    Re: Magnets repel more weakly than attract "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-06-22 11:47 -0700
      Re: Magnets repel more weakly than attract benj <benj@nobody.net> - 2016-06-22 16:17 -0400
        Re: Magnets repel more weakly than attract "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-06-22 15:45 -0700
  Re: Magnets repel more weakly than attract "Y.Porat" <y.y.porat@gmail.com> - 2016-06-23 02:32 -0700
  Re: Magnets repel more weakly than attract "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-06-24 08:41 -0700
  Re: Magnets repel more weakly than attract "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-06-23 15:30 -0700
  Re: Magnets repel more weakly than attract "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-06-23 16:41 -0700

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