Skip to content
- Greek shepherd Magnes first discovered about magnets when his stick was attracted to a rock.
- Those natural magnet rocks were named as magnetite.
- Magnetite contains iron.
- Some people believe that magnetite was first discovered at a place called Magnesia.
- The substances having the property of attracting iron are now known as magnets.
- The magnets discovered in nature are called natural magnets.
- The magnets which are made artificially by men are called artificial magnets. Eg: Bar magnet, Horse-shoe magnet, Cylindrical magnet.
- The materials which get attracted towards a magnet are magnetic materials. Eg: Nickle, Cobalt.
- The materials which are not attracted towards a magnet are non-magnetic materials. Eg: Wood, Cotton.
- The ends of the magnet are called poles of the magnet.
- All magnets have two poles irrespective of their shape.
- The magnetic strength is high on the poles.
- A freely suspended bar magnet always comes to rest in North- South direction.
- The end of the magnet that points towards North is called its North seeking end or the North pole of the magnet.
- The other end that points towards the South is called South seeking end or the South pole of the magnet.
- Like poles repel each other while unlike poles attract each other.
- A compass is usually a small box with a glass cover on it. A magnetised needle is pivoted inside the box, which can rotate freely.
- A compass also has dial with directions marked on it. Often North-South direction is highlighted with different colour.
- Magnets lose their properties if they are heated, hammered or dropped from some height.
- To keep them safe, magnets should be kept in pairs with their unlike poles on same side and separated by a piece of wood while two soft pieces of soft iron are placed across their ends.
- Keep magnets away from cassettes, mobiles, television, music system, compact disks (CDs) and the computer