How can I magnetize and demagnetize objects without using extreme heat?

  • Context: High School 
  • Thread starter Thread starter Jacquesl
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Discussion Overview

The discussion revolves around methods for magnetizing and demagnetizing objects, specifically focusing on practical approaches without the use of extreme heat. Participants explore various techniques, including the construction of a solenoid and the application of alternating and direct current, while also touching on broader concepts related to energy and magnetism.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant inquires about building a simple magnetizer and demagnetizer, expressing frustration at the lack of information available online.
  • Another participant suggests creating a solenoid using copper wire and a paper tube, recommending the use of alternating current or a method to simulate alternating magnetic fields for demagnetization.
  • A different participant questions the feasibility of using these methods to create a permanent magnet motor with over unity output, indicating that their ideas often contradict each other.
  • One participant firmly states that only a change in energy can perform useful work, referencing Lenz's law in their argument against the possibility of over unity devices.
  • Several participants express skepticism about the existence of working over unity devices, with one humorously commenting on the challenges of such inventions.
  • Another participant suggests purchasing a screwdriver magnetizer/demagnetizer from a hardware store as a practical solution.

Areas of Agreement / Disagreement

There is no consensus on the feasibility of creating over unity devices, with some participants expressing skepticism and others exploring the idea. The methods for magnetizing and demagnetizing objects are discussed, but no definitive agreement on the best approach is reached.

Contextual Notes

Participants reference concepts such as Lenz's law and the need for energy changes, but these discussions remain unresolved and contingent on further exploration of the principles involved.

Jacquesl
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Hi,

Can someone please tell me how does a demagnetizer and a magnetizer works, I want to build a simple one, I can’t find a darn thing on google?

I just want to magnetize a piece of nail with a machine for leaning purpose on magnets and then I want to demagnetize it without heating the piece of nail with a blowtorch to 1700 deg

This machine and magnets won’t be used for terrorist acts

thx
 
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You need to create a solenoid. Get acquainted with Lenz's law and a few other things pertaining to magnetism (any A-Level physics book will contain those things).

Just take copper wire, and coil it around a paper tube of the diameter you need. You then need an alternating current source, or alternating movement.

Let's say you have a 9V battery attached to a coil wrapped around a paper tube (use a resistor in series with this or prepare for fire!).

You want to demagnetize a nail. You can use a constant DC current and move the nail in and out of the paper tube to simulate alternating magnetic fields, or you can provide alternating current. That, is as simple as using a "push to make" or "push to break" switch in the circuit, placing the nail in the paper tube and attempting to see how long it takes to contract arthritis.

Either way, you want the magnetic "grains" to line themselves up uniformly, for a magnetised object, and to demagnetise, you need to throw them out of order.
 
dst, can I use this method or some method to build a permanent magnet motor that has a higher output then input, like a working over unity device, most of my ideas cancel its other out
 
No, not at all.

Again, Lenz's law - only a change in energy can do useful work. God hates us.
 
Rolmao, no $**t man, he really does hates us
 
Last edited:
Go to the local hardware store and buy a screwdriver magnetizer/demagnetizer. If you're going to invent over unity, you'll need a lot of magnetized nails.
 
TVP45 said:
Go to the local hardware store and buy a screwdriver magnetizer/demagnetizer. If you're going to invent over unity, you'll need a lot of magnetized nails.

Man, you’ll make my day if u can point me out to even one working over unity device.
 
Free energy.
 
Last edited by a moderator:

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