From what I understand they can repel the earth's magnetism. Could you use them to levitate?
Can they be made powerful enough to levitate a house, or a city?
QUOTE (arpc_01+Oct 27 2009, 05:15 PM)
From what I understand they can repel the earth's magnetism. Could you use them to levitate?
Can they be made powerful enough to levitate a house, or a city?
It's not a very strong magnetic field, and it's in the wrong direction. You could only levitate if you were on the north or south (magnetic) poles.
Can they be made powerful enough to levitate a house, or a city?
It's not a very strong magnetic field, and it's in the wrong direction. You could only levitate if you were on the north or south (magnetic) poles.
I fly with magnets all the time. I read people's minds with them, too. I also have super strength, super speed, and a pecker the size of a baby's leg thanks to magnets.
Magnets rock.
Magnets rock.
It is actually possible to fly with magnets, but I would recommend hiding them in a body cavity so security can't figure out what's setting off the scanner on the way to the terminal 
As for the magnetic pole idea, I think this would be dangerous because whenever I try to push two magnets together that are being repelled by the same poles, one will almost always seems to flip over lightning fast and stick to the other one. If this happened why you were strapped to a very large and powerful magnet, you could be badly injured.
As for the magnetic pole idea, I think this would be dangerous because whenever I try to push two magnets together that are being repelled by the same poles, one will almost always seems to flip over lightning fast and stick to the other one. If this happened why you were strapped to a very large and powerful magnet, you could be badly injured.
QUOTE (arpc_01+Oct 27 2009, 09:15 PM)
From what I understand they can repel the earth's magnetism. Could you use them to levitate?
Can they be made powerful enough to levitate a house, or a city?
How about starting with something small first...like diamagnetism using pyrolytic graphite and strong magnets.
see video here... http://video.google.com/videoplay?docid=23...097019486262141
Can they be made powerful enough to levitate a house, or a city?
How about starting with something small first...like diamagnetism using pyrolytic graphite and strong magnets.
see video here... http://video.google.com/videoplay?docid=23...097019486262141
The Earth's field is not only a bit weak (I'm sure we could live with this). It's also very uniform, and this prevents from getting a net force from any magnet or coil of reasonable size.
That is, magnets repel another because each sees a smaller field from the other if they're farther away. Similarly, a coil produces a net force because field direction isn't the same on the whole length of the loop.
Now, take a field that varies within 1000km, and objects of 1mm, 1m or even 1km size won't produce a force.
They can and do produce a torque in a uniform field. Any compass does it.
That is, magnets repel another because each sees a smaller field from the other if they're farther away. Similarly, a coil produces a net force because field direction isn't the same on the whole length of the loop.
Now, take a field that varies within 1000km, and objects of 1mm, 1m or even 1km size won't produce a force.
They can and do produce a torque in a uniform field. Any compass does it.
PhysOrg scientific forums are totally dedicated to science, physics, and technology. Besides topical forums such as nanotechnology, quantum physics, silicon and III-V technology, applied physics, materials, space and others, you can also join our news and publications discussions. We also provide an off-topic forum category. If you need specific help on a scientific problem or have a question related to physics or technology, visit the PhysOrg Forums. Here you’ll find experts from various fields online every day.
To quit out of "lo-fi" mode and return to the regular forums, please click here.