Faraday paradox revisited,magnetic field rotation question.

[lumen]

@AC

Faraday's experiments are 100% correct for the three parts that were tested. It's only the paradox conclusion that is wrong.
If one takes the incentive to perform additional tests one will find there is no paradox and the Faraday generator relies on the very same basis as all generators.

[guest1289]

  Since there's no proof contradicting Faraday's paradox,  it can only be correct,  the field around a permanent-magnet is stationary (  easiest to see in a rotating-disk-permanent-magnet ) .
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    But it's still useful to try and disprove Faraday's paradox, or find any errors in it,  etc .
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    If the metal-disk that spins next to the disk-magnet( in the Faraday paradox ) was made of  iron,  instead of aluminium,  then I would state the possibilities of the following ( assuming the probe/conductor used for detecting current, is only set up to detect current in the iron-disk ) :
     ( 1 ) - when the disk-magnet and iron-disk spin together - the disk-magnet has turned the iron-disk into a temporary-magnet,  so the  iron-disk is somehow causing a current to be generated in relation to itself and the  probe/conductor used for detecting current,   maybe like a pump,  pushing electrical current .
     ( 2 ) -  but when only the disk-magnet spins,  and the  iron-disk  stays stationary,  then the iron-disk cannot do whatever it was doing with the probe/conductor used for detecting current,  in situation  number ( 1 )
     ( 3 ) -  when only the iron-disk rotates, and the disk-magnet stays stationary,  then that iron-disk is still a temporary-permanent-magnet like in  situation  number ( 1 ),  so it will do the same as   in situation  number ( 1 ).
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    I think there may be a  'definitive' test that would 'Not'  involve detecting current in disks using conductors or brushes.

   This 'test' is based on something mentioned in one of the previous posts,  simply stating,    that a current will be generated in a  disk-permanent-magnet  rotating on its own axis,  because the stationary-magnetic-field  of the rotating  disk-magnet,  will induce/generate a current in the rotating magnet.
   (  I can't find that in previous posts at the moment,  but I assume it's correct  )

   The test would be that an  un-commutated  central rotating component of a DC-motor,  would rotate inside of a ring-permanent-magnet,  and the RPM of that,   would be compared to the RPM of just letting the  ring-permanent-magnet rotate,   keeping in mind that the ring-permanent-magnet would experience friction against it's own magnetic-field,  when it is rotating,  but not when it is not rotating.
    (  The problem is that the central rotating component of a DC-motor,  and electromagnet,  would 'may' also have friction with it's own stationary-magnetic-field when it is rotating,  in a way I can't visualize .  )

    - Obviously this test would have to be done in a high-vacuum,  and / or components shielded or designed to eliminate air-drag .
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    So Faraday's paradox should not function sufficiently far away from the universe,  where there is insufficient medium for a magnet to generate a magnetic-field .
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   However, what about putting JUST the  disk-permanent-magnet rotating on it's own axis,   in a very-very fast flowing current of water( containing a sugar content like grapes, diamagnetic ) to try and reduce it's magnetic-field,    if there's no decrease in current produced by simply  rotating  the disk-permanent-magnet  on it's own axis,  it could mean that THE CAUSE OF THE CURRENT GENERATED,   IS THE EFFECT OF THE ROTATING DISK-MAGNET ON THE  PROBE/CONDUCTOR USED TO DETECT CURRENT.
   -  Some type of Ferrofluid  could also be an alternative for this test .

[guest1289]

   This is an update to the post I just posted ( I'm doing it as a another post so as not to alter the time-stamp of the post I just posted ).
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     That scenario I describe of replacing the aluminium-disk,  with an iron-disk.
       -  That scenario could possibly still apply to an aluminium-disk,  via a different way,  because when  the disk-permanent-magnet causes current to be generated in the  aluminium-disk, it is also turning that aluminium-disk into an electromagnet.

    NOTE : Basically,  what I'm saying about the iron-disk( or the aluminium-disk ),  is that the cause could be the rotation of the  iron-disk( or the aluminium-disk ) in relation to the stationary probe/conductor used to detect current in the iron-disk( or the aluminium-disk ),   
      -  I haven't thought about it 'if' the probe/conductor used to detect current in the iron-disk( or the aluminium-disk ),  also rotates together with the iron-disk( or the aluminium-disk ).
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    WHAT ABOUT :  In regard to simply having a  disk-permanent-magnet  rotating on it's own axis,  and measuring the current generated in the rotating  disk-permanent-magnet  from it's own STATIONARY-MAGNETIC-FIELD.
      -   What about if you have 3-disk-permanent-magnets evenly spaced along the same shaft( the magnets are physically fixed, glued to the shaft ),  and orientated so that they would clank together if it wasn't for the spacers SLIGHTLY separating them apart on the shaft, 
       -  NOW,  rotate the shaft/the magnets,  would it affect the current induced in the MIDDLE-disk-magnet,    IN COMPARISON,    to if the  MIDDLE-disk-magnet  was the only magnet on the shaft  ?
           (  The shaft should be plastic, or wood  )


      AND ALSO,  what about having 2 ( or 3 ) disk-magnets contra-rotating against each other on the same shaft, you figure the rest out.
     

[PolaczekCebulaczek]

guest1289 i like your thinking ,but what about experiment that i have performed with coil, magnet and multimeter placed on rotating office chair? no brushes, everything just rotates and no current detected,  by looking at results - it seems that field does rotate with magnet on axis.

[lumen]

guest1289 i like your thinking ,but what about experiment that i have performed with coil, magnet and multimeter placed on rotating office chair? no brushes, everything just rotates and no current detected,  by looking at results - it seems that field does rotate with magnet on axis.

I agree that it is more likely that the field does rotate with the magnet but there is much more going on in the chair experiment to confirm it for certain.
Consider that the field is a loop from one pole to the other and any conductor would in fact be passing through the field in both directions. So any movement through the field generates a canceling charge from the same field passing through the conductor in the opposite direction and provide zero current.

If an electroscope could detect a charge displacement from a spinning magnet without contact and also detect a change in rotation direction, then the results would be more conclusive that the field rotates with the magnet. One could also rotate the electroscope to detect the stationary field in the same manner.


Also: to protect the gate of the mosfet you can use two zener diodes back to back in series to limit the gate voltage to the zener voltage. +-10v should be good.