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Magnetic Disks, otherwise known as 'Floppy disks'. The last generation of these disks were 3 1/2" and used a ridgid plastic case, to contain the magnetic disk within. Not very floppy. The early versions were 7" and 5" and were contained in soft plastic outer sleeves. These were actually floppy.
Magnetic separation is technique used in metallurgyfor the concentration of ore particles. The principle of this method is that the magnetic ore particles can be separated from non magnetic impurities (gangue) or viceversa.
A non-magnetized piece of iron would capture the magnetic particles.
It is the magnetic elements in a magnetic disk that are used to store information.
if charge particle is in motion ,then it has magnetic field
A magnetic stripe card is a type of card capable of storing Databy modifying the Magnetismof tiny iron-based magnetic particles on a band of magnetic material on the card.
the particles in the non magnetic material get magnetised, therefore it temporarily becomes a magnetic.
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magnetic repulsion
Antimatter