I know the magnetic field would need to be very large, but if an organisation like NASA with huge funding and resources could build a large enough device, could a man float in that magnetic field to simulate zero gravity?
I would love to know how large the device may need to be, though presumably it would be in relation to it's power (are we talking 747's or football fields?).
My idea is that this would be safer than astronauts training under water in their enormous pools (and reduce risk of drowning as per recently in the news), and would help them train for the International Space Station etc. without the stop/start effects on the zero-G airplanes.
We can levitate frogs and other small insects (video here: http://www.youtube.com/watch?v=BqKeiiezqzc) so presumably it would be possible to scale everything up for a man or woman - possibly wearing clothing/apparatus to help achieve the zero gravity effect.
I guess the next question would be are there any health effects should a large enough magnetic device be produced?!