Results 1 to 6 of 6

Thread: Copper plates and magnets ,force field motion dampening

  1. #1
    Join Date
    Dec 2001
    Location
    Northern NSW Australia
    Posts
    70,075

    Default Copper plates and magnets ,force field motion dampening

    Very new to me !

    '' You ain't gonna learn what you don't want to know. ''
    Grateful Dead

  2. #2
    Join Date
    Jan 2005
    Location
    Deepest Darkest Wales
    Posts
    19,278

    Default Re: Copper plates and magnets ,force field motion dampening

    See also fishing reels and speedometers.
    Someday, I'm going to settle down and be a grumpy old man.

  3. #3
    Join Date
    Dec 2001
    Location
    Northern NSW Australia
    Posts
    70,075

    Default Re: Copper plates and magnets ,force field motion dampening

    and brakes in electric trams . Useful!
    '' You ain't gonna learn what you don't want to know. ''
    Grateful Dead

  4. #4
    Join Date
    Jan 2002
    Location
    Adelaide South Australia
    Posts
    533

    Default Re: Copper plates and magnets ,force field motion dampening

    Magnets being moved near metal will induce eddy currents, which can cause magnetic fields (think of the magnetic field which surrounds a wire that has a current flowing through it) which can result in weak attraction, as stated above, speedos (not swimware), spinning magnet surrounded by aluminium cup, restrained by a spring. Eddy current devices are used to detect corrosion/cracks in aluminium.
    the invisible man........

  5. #5
    Join Date
    Feb 2010
    Location
    northern Georgia, or sometimes Mississippi Delta USA
    Posts
    14,550

    Default Re: Copper plates and magnets ,force field motion dampening

    The principle is also used for damping scales like a triple beam balance.

  6. #6
    Join Date
    Dec 1999
    Location
    Oriental, NC USA
    Posts
    4,543

    Default Re: Copper plates and magnets ,force field motion dampening

    Almost everyone has a device that works on this principle that measures how much power the power company is supplying to the home or business. Its a well known phenomenon and maxwaterline nailed the principle.
    Tom L

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •