There are many legends that tell us
about the discovery of magnets.
One of the most common, is that of an
elderly shepherd named Magnets, who
was herding his sheep in an area of
Northern Greece called Magnesia,
about 4,000 years ago.
It is said that both the nails in his shoes
and the metal tip of his staff became
firmly stuck to the large, black rock on
which he was standing. This type of
rock was later named magnetite, after
either Magnesia or Magnets himself.
What is Magnetism?
is the
Magnetism
force of
attraction or
repulsion of a
magnetic
material due to
the arrangement
of its atoms,
particularly its
electrons.
Artificial Magnets
PROPERTIES OF MAGNETS
Magnets attracts small pieces of iron towards it.
A freely suspended magnet points in North-
South Direction.
Like poles repel, unlike poles attract.
Magnetic poles exists in pairs.
It can magnetize another piece of iron when
rubbed with it.
Magnets attracts small pieces of iron towards it
A freely suspended magnet points in
North-South Direction
Like poles repel, unlike poles attract
Magnetic poles exists in pairs
It can magnetize another piece of iron
when rubbed with it
Magnets are in most electronic devices, in fact,
anything that has a motor uses a magnet.
They are used to slow
down roller coasters
and subways.
More uses of magnets are found every day!
Magnetic Induction
Earth is a huge Electro Magnet
Patterns of Lines
Tracing of magnetic field using compass
ANY QUERIES

magnetismpptforomp-200507100310.pptx

  • 2.
    There are manylegends that tell us about the discovery of magnets. One of the most common, is that of an elderly shepherd named Magnets, who was herding his sheep in an area of Northern Greece called Magnesia, about 4,000 years ago. It is said that both the nails in his shoes and the metal tip of his staff became firmly stuck to the large, black rock on which he was standing. This type of rock was later named magnetite, after either Magnesia or Magnets himself.
  • 3.
    What is Magnetism? isthe Magnetism force of attraction or repulsion of a magnetic material due to the arrangement of its atoms, particularly its electrons.
  • 5.
  • 6.
    PROPERTIES OF MAGNETS Magnetsattracts small pieces of iron towards it. A freely suspended magnet points in North- South Direction. Like poles repel, unlike poles attract. Magnetic poles exists in pairs. It can magnetize another piece of iron when rubbed with it.
  • 7.
    Magnets attracts smallpieces of iron towards it
  • 8.
    A freely suspendedmagnet points in North-South Direction
  • 9.
    Like poles repel,unlike poles attract
  • 10.
  • 11.
    It can magnetizeanother piece of iron when rubbed with it
  • 14.
    Magnets are inmost electronic devices, in fact, anything that has a motor uses a magnet. They are used to slow down roller coasters and subways. More uses of magnets are found every day!
  • 16.
  • 19.
    Earth is ahuge Electro Magnet
  • 20.
  • 21.
    Tracing of magneticfield using compass
  • 22.