jafreeman
>>Any field effect, electric, magnetic, electromagnetic, whatever, falls off rapidly, you know, following the *inverse square law*. That’s why, even with a powerful magnet, if you remove the magnet from the steel cover and withdraw it an inch or two there is no more magnetic attraction, pull. You can even feel it stop. At some point the Earth’s magnetic field has more of an effect. Obviously.
Except in an MRI suite. You better empty your pockets and body of ferrous-metal objects, or they will become missiles.
>>>>The Inverse Square Law is universal and applies even in an MRI. Would mats make MRIs more effective? You decide.