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Author Topic: A question about magnets  (Read 4695 times)

Offline Low-Q

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A question about magnets
« on: February 21, 2007, 03:38:11 PM »
I don't know where to post this, but the closest I got was under "MAGNET motors":

When a magnet is made, it requires energy to magnetize it - magnetic energy.
So, why is it so hard to extract this energy out of the magnet again?

A normal permanent magnet based electric motor, when loded maximum, the magnets must some how reduce their magnetic field - I guess it do, but I wonder why it seems that one can load this motor with several times more energy than what is used to magnitize the permanent magnets in it. The magnets must provide som counterforce to the electromagnet in the rotor! And this force seems to last forever!

Is it then a way to extract energy from permanent magnets alone? I mean, a magnetic field, which seams to be polarized, must be the voltages answer to electric polarity. In a capacitor, its possible to store a sertain amount of voltage and extract it by load it with a resistor. While loading the capacitor, a current with a magnetic field with a polarity is made.
So the idea is to extract the magnetic polarity in a magnet to provide voltage and electric polarity, which again can produce energy - without using wires/coils etc.

Isn't this what we all is discussing in the "Magnet Motor" topic - and still have no working models. I think we have to think different when handeling magnetic fields, and think the same way as we do when handeling electric fields and how to extract energy out of that.

Any comments or ideas folks?

Br.

Vidar

Free Energy | searching for free energy and discussing free energy

A question about magnets
« on: February 21, 2007, 03:38:11 PM »

Offline Flit

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Re: A question about magnets
« Reply #1 on: February 22, 2007, 02:37:08 PM »
When a magnet is made, it requires energy to magnetize it - magnetic energy.
So, why is it so hard to extract this energy out of the magnet again?

It does take energy to create a magnet, but this energy is used to alter the structure of a piece of metal to turn it into a magnet.  The energy is used to make the magnet, not stored within it.

Think of hammering a nail into a piece of wood.  It takes energy to do so, but you couldn't get that energy back out of the nail at a later time.

Offline Paul-R

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Re: A question about magnets
« Reply #2 on: February 22, 2007, 04:00:01 PM »
Does thinking in terms of the concept of "potential energy"
lead anywhere?
Paul.

Free Energy | searching for free energy and discussing free energy

Re: A question about magnets
« Reply #2 on: February 22, 2007, 04:00:01 PM »
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Offline Nali2001

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Re: A question about magnets
« Reply #3 on: February 22, 2007, 05:55:26 PM »
In the factory it only takes a short strong coil-cap pulse to permanently magnetize a neo magnet (or 100's at a time). That magnet will run a lifetime in generator allowing the 'production' of electricity. But won't really run down itself. And even if it does. Just a strong magnetic pulse form a big coil and cap will magnetized it for the next like 500 years. You only setup the material so the field can exist. The magnet's own structure (due to the pulse) will do the magnet field 'creating'.

Offline Low-Q

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Re: A question about magnets
« Reply #4 on: February 23, 2007, 09:48:50 PM »
When a magnet is made, it requires energy to magnetize it - magnetic energy.
So, why is it so hard to extract this energy out of the magnet again?

It does take energy to create a magnet, but this energy is used to alter the structure of a piece of metal to turn it into a magnet.  The energy is used to make the magnet, not stored within it.

Think of hammering a nail into a piece of wood.  It takes energy to do so, but you couldn't get that energy back out of the nail at a later time.
Thanks for reply.

I have thought about this too. But does it require much energy to move electrons from one surface to another, like you do when charging a capacitor? A capacitor is possible to discharge, so the question about using magnets as an alternative or potential energy source also came up.

Br.

Vidar

Free Energy | searching for free energy and discussing free energy

Re: A question about magnets
« Reply #4 on: February 23, 2007, 09:48:50 PM »
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Offline fleebell

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Re: A question about magnets
« Reply #5 on: March 21, 2007, 06:42:38 AM »
Your talking apples and oranges here , it's a totally different scenario. All that basically happens when you make a magnet is your mechanically lining up the atom spins so they all match. (well, at least most of them anyway)

 That is where the field comes from, all those atoms pointing their tiny individual fields on one direction so they add together and make a big field that you can interact with.
 It is not some added charge etc...I repeat,  You have not added any energy to it.   Just because it done with a powerful magnetic pulse on commercial ones doesn't matter.  It's still basically a mechanical process... Stoke a magnet on a needle - needle is now a magnet , you have mechanically aligned the atoms - same thing.   Heat a magnet in a small flame... atom spins disorganize and the magnetic field is gone. or wrap a magnet in something  (to prevent flying bits) and then smack it good with a hammer once or twice.... same thing no more magnet...atom spins disorganize and the magnetic field is gone.

 Actually when you think about it a magnet is the perfect over unity device.
 Make one magnet mechanically or electrically and that magnet can make many more without ever losing it's own field.


 

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