Almost two thousand years ago, Hero (actually Heron) of
Alexandria invented the first steam turbine, called the aeolipile
- a hollow sphere supported on two brackets on the lid of a basin
of boiling water. One bracket was hollow and conducted steam.
The steam escaped from two bent pipes on the top, therefore creating
a force that made it spin around. The movement of the ball was
used to make puppets dance. Heros aeolipile illustrated
the scientific principle of Sir Isaac Newtons third law
of motion, which states that for every action there is an equal
and opposite reaction.