5 ms·
Still the question remains, are they dangerous? I guess some materials in the body have some response to magnetic fields
by sharikous 2y ago
Still the question remains, are they dangerous?
I guess some materials in the body have some response to magnetic fields
- Madmallard 2y agonot at all whatsoever. however if you have gadolinium injected for contrast some people have problems with that. but the magnetic field itself doesn't affect you negatively on its own
- ChainOfFools 2y agoIs there a field strength at which the iron in your blood would start to become a problem?
- Madmallard 2y agoThis is probably an adequate answer to that: https://www.reddit.com/r/AskPhysics/comments/3w03pj/comment/cxsnggx/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button https://www.reddit.com/r/AskPhysics/comments/3w03pj/comment/...
- emporas 2y agoSome experiments with magnet, water, blood etc. https://www.youtube.com/watch?v=E-yHv91Y_oI https://www.youtube.com/watch?v=E-yHv91Y_oI
- giantg2 2y agoWe don't have any evidence they are dangerous. There are some phenomenon like magnetophosenes. You could also look up what a magnetar would theoretically do to a body, but nobody is getting close to one of them anytime soon.
- rcxdude 2y agoVery strong constant magnetic fields don't seem to be dangerous (at least at the kind of levels MRI machines work at, which are within an order of magnitude of the strongest magnets on the planet). A very rapidly changing strong magnetic field can be dangerous, because it induces currents in your body, like in your nerves. There are safety limits (very conservatively set) in MRI machines on how quickly they adjust magnetic fields, as if they were to really go for it there's a risk of heart problems (in the moment, it's not like CT scans where more exposure means more risk later in life).