The USS Monitor, launched in 1862, was powered by a high-pressure steam engine. And, like all of the engines just discussed, it was a reciprocating engine—that is, an engine that relies on pistons.

5 For an electric pressure cooker, set the machine to cook at high pressure (9-11 psi). Set the machine’s timer to cook at high pressure for 15 minutes. 6 Use the quick-release method to bring ...