There
is a picture of a smith hammering steel to make a magnet, in
a book called De Magnete written by Queen Elizabeth I's
physician Dr William Gilbert. |
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Heating
and hammering with a steel bar in a North-South direction can
make a magnet. |
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This
causes the molecules to line up in the North-South orientation. |
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Stroking
a piece of unmagnetised iron or steel with a known magnet can
make it into a magnet. |
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This
causes the molecules to line up in the North-South orientation. |
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Placing
a magnet alongside a non-magnetised steel knitting needle for
some time will magnetise it. |
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This
causes the molecules to line up in the North-South orientation. |
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Placing
an object such as a non-magnetised steel knitting needle in a
north-south position will allow it to become a magnet through
the influence of the earth's magnetic field. |
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This
causes the molecules to line up in the North-South orientation. |
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