Overview
The question, ‘Who invented the first steam engine and in what year ?’ is an interesting one, because the answer is so fuzzy. Heron (also called Hero) is sometimes credited as the one who invented the steam engine at about 100 A.D, because he built a device which rotated by jet power from exhausting steam. Another candidate,
Thomas Savery, patented a means of pumping water out of coal mines by steam power in 1698. In about