A material/ substance that does not allow the through it

[scupydog]

Has anyone invented a material/ substance that does not allow the field of a magnet through it

 

[Hootenanny]

Google: Magnetic Shielding

 

[marcusl]

Superconductors also have that property. Specifically, Type 1 superconductors expel flux perfectly up to a critical field where they can no longer keep the field out. This is called the Meissner effect.

 

[ranger]

You can read up more on Diamagnetism. A superconductor is a perfect diamagnet, where it keeps magnetic fields from its interior. But a superconductor cannot keep a magnetic field out for all intensities. Once the critical field is met, it looses its perfect Diamagnetism and can no longer oppose magnetic fields.

 

[scupydog]

thanks for your replies, very helpfull in my quest for a perpetual motion machine using magnetism and gravity

 

[Gokul43201]

They're only helpful if they've convinced you to abandon the quest!

 

[scupydog]

Reading another post about gravity being a type of energy, from which i derived it isn't. Therefore a PM machine using only gravity and magnetism does not break the law of energy conservation. I am sure there's more to it than that, if any could enlighten me i would be gratefull.https://www.physicsforums.com/showthread.php?t=138215

 

[marcusl]

Reading another post about gravity being a type of energy, from which i derived it isn't. Therefore a PM machine using only gravity and magnetism does not break the law of energy conservation. I am sure there's more to it than that, if any could enlighten me i would be gratefull.


https://www.physicsforums.com/showthread.php?t=138215

Perpetual motion is simply not allowed by thermodynamics. Please save yourself the time of a wild goose chase. If you insist on continuing, at least spare the poor readers of PF forum from yet another fruitless thread.

Thanks!