How could a magnetic field kill some one, I read it i a book and I head that therre's a magnetic field that is so power fl it could kill you.
by 
D-mongreen
ANSWERS: 4
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well if you had a pace maker the magnetic field could disable it. other than that i don't know how
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Red blood cells contain haemoglobin which contains an iron atom. Imagine all your red blood cells sticking together. Worse than that, the brain communicates between brain cells using electric currents. electric currents in a magnetic field move the medium they are travelling in. If the brain cells can't move, the current must stop. You'd need an immensly powerful field to kill someone. More powerful, I think, than can be generated by man.
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Blood contains iron which is non-ferrous. Magnetism has no effect on it. That is why MRI are safe. You also cannot use magnets to seperate red blood cells from other blood cells. Subjecting the natural electric currents of the body to a strong magnetism can effectively destroy the circuits of our body. Lets use an extrenme example. Approaching a magnetar (magnetic neutron star) which has the equivalent of 100 billion MRI machines would kill you. These neutron stars have a magnetic field so strong that they could erase your credit cards from 250,000 miles away. This kind of strong magnetism would kill a human thousands of miles away. Proof of this statement can be found on the nasa.gov website.
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LDH I correct. In an MRI the magnetic field is so strong it will pull an oxygen tank from over 20 ft. away. And it isn't the iron in the hemoglobin that is magnetized, partly because it is nonmagnetic ferrous form of iron and partly because it is such a small part of the molecule. The magnetic part of mri is harmless. The microwaves they beam at you will make you a bit warm during the mri.
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