Reversible Process

A reversible process is a theoretical concept in thermodynamics where a system changes in such a way that it can be returned to its original state without any loss of energy or creating entropy (disorder). Think of it as a perfectly smooth transformation, like slowly stretching or compressing a rubber band without causing heat or damage. In real life, truly reversible processes are ideal and rarely happen, but they help us understand the limits of efficiency in engines and other systems by imagining the most efficient way energy can be transferred or converted while maintaining equilibrium.