-
Hero
-first machine to use hidden source of energy
-useless device -
Denis Papin
-designed the first heat engine -
Thomas Savery
-invented first successful steam-powered pump -
Thomas Newcomen
-invented heat engine also used steam as driving force
-used a piston -
James Watt
-asked to repair Newcomen's engine
-designed new, more efficient engine
-three times more efficient than Newcomen's