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- text/5/1
- As you probably know, if you move a
- magnet past a wire an electric
- current is generated. This is how
- atomic generating stations work.
- An atomic pile turns water into
- steam, the steam flows past fans,
- making them turn. The fans are
- connected to magnets and the
- magnets spin within coils of wire,
- creating lots of electricity. This
- is also how disks work. Spots on
- the disk are magnetized,
- representing bits of bytes. As the
- disk spins by a small coil in the
- head, as the spots pass, spikes of
- electricity are produced. These
- spikes are translated into bytes
- and passed to the CPU and the RAM.
-
- ~
-
- text/340/3
- If you run a current through
- a wire near a magnetizable
- metal, the metal will become
- magnetized. This is how writing
- to a disk is done. As the disk
- turns past the coil in the head,
- the coil is energized every time
- an "on" bit is to be written to
- the disk, resulting in a
- magnetized spot. The switching on
- and off of the electricity
- flowing through the head is very
- fast.
-
-
- ~