Heron of Alexandria

lived from 10 to 75

Heron or Hero of Alexandria was an important geometer and worker in mechanics who invented many machines ncluding a steam turbine. His best known mathematical work is the formula for the area of a triangle in terms of the lengths of its sides.

Find out more at:
http://www-history.mcs.st-andrews.ac.uk/Mathematicians/Heron.html