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 The Trek BBS Opposing Magnets Query

 Science and Technology "Somewhere, something incredible is waiting to be known." - Carl Sagan.

 March 26 2009, 03:25 PM #1 All Seeing Eye Admiral   Location: The Astral Light Realms Opposing Magnets Query When you place two opposing magnets together obviously they will repel each other and you can feel them repelling. Now let's say you take a couple of Neodymium magnets (really strong ones) and you force them together so they are touching each other (obviously the repelling force will be incredible). Now imagine you lock them together like that with some kind of metal bracing so they are forever locked together in repulsion. Now here is the important part, imagine before you locked them together you cut a bit out of each magnet so there was a tunnel or tubular hole running through the centre and you place within this area a coiled wire. Would the magnetic fields be continually fluctuating due to magnets being locked together whilst repelling? and would this fluctuation of the magnetic field continually pass back and forth through the coil and thus create electrical current?
 March 26 2009, 03:41 PM #2 backstept Rear Admiral     Location: Syracuse Re: Opposing Magnets Query no, there would have to be some sort of movement to push the electrons along we all know the 2nd grade experiments of passing a bar magnet through a coil to produce current having a static magnet, would do nothing this is why generator turbines spin, and conversely how electric motors work __________________ | Hi I'm Gauis Blatar lol | backstept.blogspot.com | about.me
 March 26 2009, 03:43 PM #3 All Seeing Eye Admiral   Location: The Astral Light Realms Re: Opposing Magnets Query Yes I know what you mean but what I am saying is would the magnetic field fluctuate and would it's fluctuation cause the magnetic field to pass through the coiled wire thus creating electrical current. I know Electricity is created by magnets being physically moved so their magnetic fields pass through the coiled wire but what I am asking is would forcing two opposing magnets together and locking them in that repulsion cause the magnetic field (and not the magnet) to fluctuate and thus move through the coiled wire.
 March 26 2009, 03:44 PM #4 Alpha_Geek Commodore     Location: Central VA, US Re: Opposing Magnets Query Get a voltmeter, try it, and report the results here. You can't hurt yourself with this one unless you get your finger caught in a clamp or something equally embarrasing.
 March 26 2009, 03:46 PM #5 All Seeing Eye Admiral   Location: The Astral Light Realms Re: Opposing Magnets Query I don't have access to Neodymium magnets and I'm talking seriously big ones here so the magnetic fields would have greater repulsion.
March 26 2009, 04:30 PM   #6
iguana_tonante

Location: Italy, EU
Re: Opposing Magnets Query

 Tachyon Shield wrote: Yes I know what you mean but what I am saying is would the magnetic field fluctuate and would it's fluctuation cause the magnetic field to pass through the coiled wire thus creating electrical current. I know Electricity is created by magnets being physically moved so their magnetic fields pass through the coiled wire but what I am asking is would forcing two opposing magnets together and locking them in that repulsion cause the magnetic field (and not the magnet) to fluctuate and thus move through the coiled wire.
The magnetic field would not fluctuate, as it would be a static field.

No variation of the electromagnetic field, no current, no work.
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March 26 2009, 04:32 PM   #7
on holiday

Location: England
Re: Opposing Magnets Query

 Tachyon Shield wrote: Would the magnetic fields be continually fluctuating due to magnets being locked together whilst repelling? and would this fluctuation of the magnetic field continually pass back and forth through the coil and thus create electrical current?
The fields don't fluctuate. They're static. Electromagnetic induction requires a continuous change in the relationship between the magnetic field and the conductor.

eg, rotating the magnetic field, or changing the area of the coil.
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March 26 2009, 05:05 PM   #8
All Seeing Eye

Location: The Astral Light Realms
Re: Opposing Magnets Query

 Jadzia wrote: The fields don't fluctuate. They're static.
Why does nature mock me so?

March 26 2009, 05:21 PM   #9
iguana_tonante

Location: Italy, EU
Re: Opposing Magnets Query

Tachyon Shield wrote:
 Jadzia wrote: The fields don't fluctuate. They're static.
Why does nature mock me so?
Because it's easy.
__________________
Scientist. Gentleman. Teacher. Fighter. Lover. Father.

March 26 2009, 05:23 PM   #10
JustAFriend
Commodore

Location: South Florida, USA
Re: Opposing Magnets Query

 Tachyon Shield wrote: I don't have access to Neodymium magnets and I'm talking seriously big ones here so the magnetic fields would have greater repulsion.
Sure you do.

It's called the Internet. Order some.

March 26 2009, 05:27 PM   #11
All Seeing Eye

Location: The Astral Light Realms
Re: Opposing Magnets Query

JustAFriend wrote:
 Tachyon Shield wrote: I don't have access to Neodymium magnets and I'm talking seriously big ones here so the magnetic fields would have greater repulsion.
Sure you do.

It's called the Internet. Order some.
I don't have access to the sizes i'm talking about and I certainly don't have the money to pay for them at the prices they come at.

 March 26 2009, 05:35 PM #12 Jadzia on holiday   Location: England Re: Opposing Magnets Query Why not use electromagnets? Then you can make the magnetic field fluctuate, and you'll be able to use this to generate a current in your wire coil __________________ .
 March 26 2009, 05:37 PM #13 backstept Rear Admiral     Location: Syracuse Re: Opposing Magnets Query that would defeat the purpose by using electricity to make electricity __________________ | Hi I'm Gauis Blatar lol | backstept.blogspot.com | about.me
March 26 2009, 05:40 PM   #14
on holiday

Location: England
Re: Opposing Magnets Query

 backstept wrote: that would defeat the purpose by using electricity to make electricity
I didn't realise that was the purpose; the purpose wasn't stated. I thought it was just a question about magnetic induction
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March 26 2009, 05:41 PM   #15
All Seeing Eye

Location: The Astral Light Realms
Re: Opposing Magnets Query

 Jadzia wrote: Why not use electromagnets? Then you can make the magnetic field fluctuate, and you'll be able to use this to generate a current in your wire coil

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