who invented pressure cooker

The pressure cooker was invented by French-born British physicist Denis Papin in 1679. He called his invention a "steam digester," which was a closed vessel with a tightly fitting lid that confined steam to generate high pressure, raising the boiling point of water to cook food faster. Papin also invented a safety valve to prevent explosions in the device. His invention laid the foundation for the modern pressure cooker and contributed to the development of the steam engine as well.