Natural Magnets are rugged and clumsy and are also comparatively weak, they therefore cannot be employed for useful work. For such works suitable substances are converted into magnets.
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| Natural Magnet |
The Process of conversion of such substances into magnets is called
Magnetisation and these magnets are called
Artificial Magnets.
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| Artificial Magnets Examples |
If a piece of hard steel be magnetised, it is found to acquire a substantial magnetism which it retains for an indefinite length of time. Such steel magnets are called "
Permanent Magnets". A soft iron piece if similarly magnetised, will retain its magnetism only for a small time.
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