jan 1, 1679 - Denis Papin used steam to create vacuum creating a piston and accidentally inventing the pressure cooker. He also put safety measures into both preasure cooker and piston. When internal pressure got to high, the lid would flap open to let pressure out. Papin never actually built his piston, only designed it, but his design contributed to the design of later steam engines.
Added to timeline:
Date:
jan 1, 1679
Now
~ 347 years ago