5 ms·
Any chance of magnetically repelling a person from a ceiling, and/or attracting them from the floor, to create artificial gravity in space?
by Nevermark 3y ago
Any chance of magnetically repelling a person from a ceiling, and/or attracting them from the floor, to create artificial gravity in space?
- tornato7 3y agoJust have them wear clothes made with ferromagnetic material, should have a similar effect.
- QuantumG 3y agoNot even close but thanks for playing.
- Vecr 3y agoYou 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.
- QuantumG 3y agoYep. It's a terrible idea.
- pfdietz 3y agoNo. 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.
- xwdv 3y agoSo you’re saying there’s a way.
- pfdietz 3y agoI'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).
- shakow 3y agoInduced by the hemoglobin movement?
- pfdietz 3y agoJust motion of salty water in a magnetic field.
- scott-smith_us 3y agoThey said that the levitated frog was fine afterward, but I've always wondered about the effects of long-term exposure.
- xwdv 3y agoThat sounds like a much more convincing explanation than “we simply don’t have this material”.
- pfdietz 3y agoBack 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.
- scott-smith_us 3y agoSeems 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)...
- jsdeveloper 3y agoin probably our case, it will rip off our skin and levitate it, meanwhile our flesh false to the ground.
- est 3y agoYou can, but the cost is the iron in your blood gets pulled out with extremely strong magnetism.
- bawolff 3y agoIANAP, but i would assume such levitation wouldn't be all that stable if we are expecting people to move around in it.