Do you think, you can magnetize a rotating disk with the centrifugal force???

[Octagon]

Hello

 

What you think about this...

 

Make a compass

 

Magnetize the needle.

Whether you use a sewing needle or other piece of metal, rub the object over the magnet. Always pull the needle in the same direction instead of back and forth with even movements. After 50 times the needle is magnetized.

Use the same method to magnetize the needle with silk, fur or hair. Pull the needle 50 times over the object to magnetize it. Do not use these soft things when the needle is made of a razor blade.

If you magnetize with a piece of steel or iron, knock on the needle to magnetize it. Put the needle in a piece of wood and tap 50 times on its tip.

 

http://de.wikihow.com/Einen-Kompass-herstellen

 

If, however, the rod is held precisely in the north-south direction when hit, it can be magnetized again. The inner magnets are ...

https://books.google.de/books?id=5qL4CnMSKc0C&pg=PA15&lpg=PA15&dq=schlagen+magnetisie#v=onepage&q&f=false

 

Would it be possible to magnetize them? This would also produce an interesting magnetic field.

 

The poles could then be inside and outside.

 

What you think about it?

 

Greetings Octagon

[Country Boy]

Your "links" don't work so it is impossible to know what you are asking. "Would it be possible to magnetize" what?

[swansont]

What all does this have to do with a rotating disk?

[Sensei]

Use the same method to magnetize the needle with silk, fur or hair. Pull the needle 50 times over the object to magnetize it.

 

This sounds to me like method of electrostatic charging..

[Octagon]

I mean a rotating disk made of steel. There are great forces when this turns very fast.

 

​I don't mean eletrostatic charging, i mean to magnetize a Material only with a force.

[swansont]

I mean a rotating disk made of steel. There are great forces when this turns very fast.

 

​I don't mean eletrostatic charging, i mean to magnetize a Material only with a force.

Why would this magnetize the material?

[Octagon]

I think the force of the rotation would magnetize it.

[John Cuthber]

Hitting a piece of steel will (sometimes) magnetise it- but only because it is in the magnetic field of the Earth.

Rotating the steel wouldn't work.

[swansont]

The loewst energy state of the magnetic domains is random alignment, leading to an unmagnetized state. So I don't see how rotation would cause magnetization.

[Octagon]

Hitting a piece of steel will (sometimes) magnetise it- but only because it is in the magnetic field of the Earth.

Rotating the steel wouldn't work.

Are you sure? Because in the first Link stands it other. There it goes only with tapping on it.

[John Cuthber]

Are you sure? Because in the first Link stands it other. There it goes only with tapping on it.

In a fixed magnetic field- from the Earth.

But if your disk is rotating- what direction will it be magnetised in?