Seems like that couldn't possibly be practical. For one thing, it'd be like being in an MRI machine -- no metal of any kind allowed. A field that strong would likely interfere with any instruments or electronics as well, even if they were outside the room within a certain distance.
Much simpler to use constant acceleration (or spinning)...
No. The magnetic field needed increases as the size of the levitated region increases. For something as big as a person the magnetic field would require magnets made of impossibly strong materials to resist the JxB forces.
I'm not even sure a person could survive being in a magnetic field that strong. Motion of blood through the field would generate electric currents in the brain and heart (and elsewhere).
Back of the envelope tells me levitating a person would need a magnetic field 10x that of this frog droplet, or about 160 T. The magnetic pressure of a 160 T magnetic field 1.5 million psi, or about 100x the pressure at the bottom on the Marianna Trench, and also about 1/3rd the detonation pressure of military high explosives.
You know there's a lot of other stuff around that would have problems with huge multi-tesla fields, right? Even levitating someone with iron attached to various points on a full body rope access harness would require consideration of the wiring in the walls.
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Any chance of magnetically repelling a person from a ceiling, and/or attracting them from the floor, to create artificial gravity in space?
Seems like that couldn't possibly be practical. For one thing, it'd be like being in an MRI machine -- no metal of any kind allowed. A field that strong would likely interfere with any instruments or electronics as well, even if they were outside the room within a certain distance.
Much simpler to use constant acceleration (or spinning)...
No. The magnetic field needed increases as the size of the levitated region increases. For something as big as a person the magnetic field would require magnets made of impossibly strong materials to resist the JxB forces.
So you’re saying there’s a way.
I'm not even sure a person could survive being in a magnetic field that strong. Motion of blood through the field would generate electric currents in the brain and heart (and elsewhere).
That sounds like a much more convincing explanation than “we simply don’t have this material”.
Back of the envelope tells me levitating a person would need a magnetic field 10x that of this frog droplet, or about 160 T. The magnetic pressure of a 160 T magnetic field 1.5 million psi, or about 100x the pressure at the bottom on the Marianna Trench, and also about 1/3rd the detonation pressure of military high explosives.
They said that the levitated frog was fine afterward, but I've always wondered about the effects of long-term exposure.
Induced by the hemoglobin movement?
Just motion of salty water in a magnetic field.
Just have them wear clothes made with ferromagnetic material, should have a similar effect.
Not even close but thanks for playing.
You know there's a lot of other stuff around that would have problems with huge multi-tesla fields, right? Even levitating someone with iron attached to various points on a full body rope access harness would require consideration of the wiring in the walls.
Yep. It's a terrible idea.
IANAP, but i would assume such levitation wouldn't be all that stable if we are expecting people to move around in it.
in probably our case, it will rip off our skin and levitate it, meanwhile our flesh false to the ground.
You can, but the cost is the iron in your blood gets pulled out with extremely strong magnetism.