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Thermodynamics

Piston-cylinder diagram showing gas expansion at constant pressure

2. Work in Thermodynamics. PV Diagrams

  • CEZ 

Thermodynamics work describes the mechanical energy exchanged between a system and its surroundings during a transformation. From piston expansion to cyclic processes, it is represented in P–V diagrams as the area under the curve or enclosed by the cycle, making it a key concept for applying the First Law of Thermodynamics.