From: roland.franzius@uos.de   
      
   Am 12.07.2017 um 10:25 schrieb John Heath:   
   > On Monday, July 10, 2017 at 12:03:01 PM UTC-4, John Heath wrote:   
   >> On Sunday, July 9, 2017 at 8:18:11 AM UTC-4, Ralph Frost wrote:   
   >>> Please pardon my poorly worded question. Are there ~independent methods   
   >>> of detecting a north pole/flux of a magnet from a south pole/flux?   
   >>>   
   >>> When I hold two rod magnets, one in each hand, and the center ends   
   >>> attract, I can obtain repulsion two ways by giving either magnet/hand   
   >>> one-half spin.  Thus it appears that repulsion is attraction with   
   >>> one-half spin (and potentially, 'north is south with one-half spin'...)   
   >>>   
   >>> Generally, we are taught that one of these repulsions is 'north-north'   
   >>> and the other is 'south-south' (like-pole repulsion).   
   >>>   
   >>> I understand that if I am given an unmarked magnet, that I can assign   
   >>> its ends a north or south label by the way it orients, say, within the   
   >>> local geomagnetic field and ~relative to our prevailing planetary   
   >>> spatial orientation relative to the 'North Star' -- Polaris.   
   >>>   
   >>> But, I wonder, and my question is, other than the inherited, nested, or   
   >>> cross-dimensional correlation, does physics have any other means or   
   >>> measures that determine if a repulsive magnetic region is 'north-north'   
   >>> rather than 'south-south'?  For instance, do they 'look different' under   
   >>> different spectral scannings?   
   >>>   
   >>> I'm curious about this because it seems like our words seem to imply or   
   >>> identify the existence of two separate 'things' whereas empirically,   
   >>> there is or seems to be only the one, rather entangled or inseparable   
   >>> 'thing'.   
   >>>   
   >>> Thanks in advance for any clarifications.   
   >>>   
   >>> Best regards,   
   >>> Ralph Frost   
   >>>   
   >>> Reality is nested structured~duality.   
   >>   
   >> If I were to shoot a charged particle , electron , at your two magnets   
   >> that are repelling I would know is it is south south or north north that   
   >> are facing each other. Your cell phone has Hall effect tansisters inside   
   >> to help with GPS. If you download an app such as compass it will also   
   >> know if it is south south or north north. It works on the same principle   
   >> as a moving charge.   
   >>   
   >> Interesting side point. If you glue 6 magnet together with all north poles   
   >> faceing in like a mono pole it will stop being a magnet. The south poles   
   >> on the outside will not stick to a fridge. It measures zero magnetic   
   >> field with a cell phone. I find it odd that it  loses all magnetism if   
   >> there is only one north or one south pole.   
   >>   
   >> [[Mod. note --   
   >> 1. Hall-effect magnetic-field sensors may make use of transistors,   
   >>     but I don't think there's any such a thing as a "Hall-effect   
   >>     transistor".   
   >> 2. I am skeptical of your glue-6-magnets-together claim.  References?   
   >>     More detailed description of experiments you've performed yourself?   
   >> -- jt]]   
   >   
   > To Mod note. I understand your skepticism. The leaps that have been made   
   > in electrical engineering are mind blowing. I have lucked out in life to   
   > be a part of this. A Hall effect transistor is actually about 300   
   > transistors etched on a silicon wafer to construct a few op-amp. For   
   > op-amp google early analog computers. These op-amps then amplify to   
   > detect the smallest difference in voltage between two sides of a   
   > conductor. This is where the detection of a magnetic field comes from as   
   > a charge will shift right or left depending on a magnetic field.   
   >   
   > As to a glue-6-magnets. It is sitting on my lab bench. You will have to   
   > trust my integrity as a follow scientist that it measure no magnetic   
   > field. When it comes to making measurements my living depends on not   
   > making such mistakes. If I open this magnetic mono cube just a tiny bit   
   > it will measure a magnetic field but not when closed into a perfect   
   > cube. Vacuum rendering software model will come to the same answer if   
   > that helps.   
      
   The meagnetic potential far outside is that of -6 units in the origin   
   and 1 unit on each axis at distance 1.   
      
   The potential is   
     V[r, \[Theta], \[Phi]]=   
   6/r -   
   1/Sqrt[1 + r^2 - 2 r Cos[\[Theta]]] -   
   1/Sqrt[ 1 + r^2 + 2 r Cos[\[Theta]]] -   
   1/Sqrt[ 1 + r^2 - 2 r Cos[\[Phi]] Sin[\[Theta]]] -   
   1/Sqrt[ 1 + r^2 + 2 r Cos[\[Phi]] Sin[\[Theta]]] -   
   1/Sqrt[ 1 + r^2 - 2 r Sin[\[Theta]] Sin[\[Phi]]] -   
   1/Sqrt[ 1 + r^2 + 2 r Sin[\[Theta]] Sin[\[Phi]]]   
      
   In spherical coordinates at r-> infinity the series starts with r^-5   
      
   Expand[TrigReduce[(Series[V[r, \[Theta], \[Phi]], {r, \[Infinity], 5}]   
   // Normal) /. {r -> 1}]]   
      
   -(1/(256 r^5))   
     7 (18 + 40 Cos[2 \[Theta]] + 70 Cos[4 \[Theta]] -   
        20 Cos[2 \[Theta] - 4 \[Phi]] + 5 Cos[4 \[Theta] - 4 \[Phi]] +   
        30 Cos[4 \[Phi]] - 20 Cos[2 \[Theta] + 4 \[Phi]] +   
        5 Cos[4 \[Theta] + 4 \[Phi]])   
      
   So the lowest harmonic on the equator is Cos[4 \Phi]. There are 4 minima   
   and maxima along the equator or any greatest circle and the field falls   
   of as r^-6   
      
   --   
      
   Roland Franzius   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)