Magnet in copper pipe

[Canell]

How about that? :2wave:

 

[winston53660]

looks like the devils work to me

 

[MaggieD]

How about that? :2wave:

I've always thought that magnetic force holds the key to perpetual motion. Those earth magnets? They are unfreakin'believable. (Not saying that's an earth magnet, just sayin...)

 

[Fenton]

Fun Fact : The CERN Large Hadron Super Collider uses massive superconductor magnets, cooled with liquid helium to guide the counter rotating beams to a collision.

That's ZERO electrical resistance.....Coool.

 

[Gimmesometruth]

looks like the devils work to me

Lenz and eddy.

 

[the_recruit]

****ing magnets....

 

[winston53660]

****ing magnets....

Well that was odd

 

[the_recruit]

Well that was odd

It appears you are out of date on your memes. Clearly, you need to waste more time browsing the internet aimlessly.

Edit: link fixed. Apparently you can't have curse words, even in links.

Magnets How Do They Work | Meme Generator

 

[winston53660]

http://knowyourmeme.com/memes/****ing-magnets-how-do-they-work

It appears you are out of date on your memes. Clearly, you need to waste more time browsing the internet aimlessly.

Ya yougins think your so smart Why I remember when modems crackled noise that was worse than listen' my brother playing scratched up Tiny Tim records!

 

[Buck Ewer]

How about that? :2wave:

It's called the Lenz's effect... Based on Lenz's law;

Lenz's law states that the current induced in a circuit due to a change in the magnetic field is so directed as to oppose the change in flux or to exert a mechanical force opposing the motion.

Magnetism and electricity are closely related. When a magnet moves near copper (or other metals, an aluminum tube will do the same thing) it sets up electrical eddy currents.

The eddy currents will repel the magnet as it falls down the copper tube. This repulsion pushes against the magnet and slows it down.
It's nothing new. Heinrich Emil Lenz the Russian physicist who first explained it died in 1865.
This is pre-civil war phisics.

 

[Deuce]

I've always thought that magnetic force holds the key to perpetual motion. Those earth magnets? They are unfreakin'believable. (Not saying that's an earth magnet, just sayin...)

Yes, every crackpot with a perpetual motion machine uses magnets because, well, people think like you.

In reality, this video actually demonstrates quite nicely why magnets don't lead to perpetual motion.

 

[Canell]

looks like the devils work to me

You know, that may not be far from the truth considering the Earth's core and magnetic field.

Those earth magnets?

Neodymium magnets. They are cool.

 

[Canell]

Yes, every crackpot with a perpetual motion machine uses magnets because, well, people think like you.

In reality, this video actually demonstrates quite nicely why magnets don't lead to perpetual motion.

Why not? Nothing comes from nothing. A 'perpetuum' mobile would actually utilize some kind of invisible energy, like the magnetic energy for instance.

 

[Deuce]

Why not? Nothing comes from nothing. A 'perpetuum' mobile would actually utilize some kind of invisible energy, like the magnetic energy for instance.

Because nothing comes from nothing. You literally just said it.

Nothing comes from nothing. Including energy to create a magnetic field. Or to exchange momentum between to magnetized objects.

You can't move an object around with a magnet for free. You have to push.

It is therefore not perpetual. You can't push forever.

When he drops the magnet through the middle of the pipe, the magnet slows down. Why?

Because there's a sort of friction force occurring. A loss of momentum. A loss of energy. Proof right there that magnets cannot give you perpetual motion.

 

[Canell]

Proof right there that magnets cannot give you perpetual motion.

Planets are giant magnets and they are moving all the time.

 

[Deuce]

Planets are giant magnets and they are moving all the time.

Planets sometimes generate magnetic fields due to certain internal forces and compositions, none of which last forever.

Also, eventually the sun is going to destroy our planet so it's not perpetual!

 

[Canell]

Also, eventually the sun is going to destroy our planet so it's not perpetual!

Well, thinking this way, yes. But it meaningless - if we are not here, we don't need magnets and engines anyway.