Electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. Electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as RF shielding.
Similarly, you may ask, why are magnets stored with soft iron keepers?
Untitled Document. Magnets become weaker with time (due to 'free' poles) near the ends repelling each other and upsetting alignment of tiny magnets). To prevent this bar magnets are stored in pairs with unlike poles opposite and pieces of soft iron - keepers across the ends.
How should we keep a horseshoe magnet?
Put away each type of magnet in its own space or drawer to prevent demagnetization. The common alnico magnet is the most easily demagnetized. Use a magnet keeper to preserve the magnetic charge. You can store horseshoe magnets end-to-end, with opposite poles touching.
Can magnets lose polarity?
Yes, it is possible for a permanent magnet to lose its magnetism. There are three common ways for this to occur: With a strong enough magnetic field of opposite polarity, it is therefore possible to demagnetize the magnet [whether this comes from another permanent magnet, or a solenoid].