Heron of Alexandria
mathematician and physicist from Alexandria, Egypt, who wrote books on mathemathics,
mechanics and physics.
Heron studied the preassure of air and steam, and built the first steamengine and toys that would spurt water, one of them known as Heron's fountain.
He also developed various instruments for measuring distances and roads, and is sometimes credited with the formula that defines the area of a triangle from its sides.
Other remarkable inventions of his was a fire extinguisher and a machine from which you could purchase various producs.