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This would be a very expensive piece of kit though. You would have to question "why?"
Or maybe I've misunderstood how big the ring is. What is its size in centimetres?
If I've understood the scenario correctly, and the size of the piece of iron, then the magnetic field would have to be so large and so powerful that you could float the person using the diamagnetism of their body's water without the iron being there at all.Iron saturates at a couple of Tesla, which with any normal applied magnetic field would give you a few kilograms of lifting, but the lift goes as a product of the field generated by the iron and the applied field, so you would need maybe a 20 Tesla applied field over the room; which is a massive, massive field over such a large volume, enough to give the diamagnetic levitation effect without the ring.To put this in perspective, normal MRI machines are about 3-5 tesla.Or maybe I've misunderstood how big the ring is. What is its size in centimetres?
Quote from: wolfekeeper on 10/10/2012 17:51:57Or maybe I've misunderstood how big the ring is. What is its size in centimetres?I guess there are different sizes of halos, but I was thinking that this iron ring is about 20 cm in diameter.
Would it make a difference to the strength required if the metal ring was also electro-magnetised (ie. had a power source to increase it's magnetism)?