4 ms·

Wouldn’t your head have started to get pulled towards it as you approached, so maybe you could stop approaching once you felt something weird going on in your h

• trod1234 1y ago
  Powerful electromagnets don't work like that. They may switch on and off, and if you are in range, the motion is almost instantaneous. Its not like in the movies where you have to be right up on it, and certain materials may attract at higher rates depending on the amount of ferromagnetic materials affected by the flux. Field flux lines may also be warped depending on the geometry so its possible the drop-off wasn't calculated properly during initial facility design, or it changed. Walking through the wrong door can have consequences as the news has reported.
• nullc 1y ago
  You normally hear it describes as the "field falls off according to inverse cube" but the consider what that means about how the field increases. The effect for magnetic fields is that generally once the field is enough to obviously move an object it's already accelerating uncontrollably.