Pressure cooker and electric generator: what they have in common

1. Step 1. Pressure cooker — has part — Safety valve. Papin invented the safety valve precisely for his digester.
2. Step 2. Safety valve — is part of — Boiler. A mandatory safeguard for boilers.
3. Step 3. Boiler — is part of — Thermal power station. Boilers.
4. Step 4. Thermal power station — has part — Electric generator. Generators.

Open Evothings