Reversible and irreversible changes
The recoverability and irrecoverability of reserves is a constant problem in theoretical research and practical techniques. They can be perceived in the framework of reversible and irreversible changes. If it does not encounter resistance, the pendulum maintains its original deflection energy. Combustion is a typically irreversible process. Under stable economic conditions, capital is conserved and can be freely converted. Cracking an egg is an irreversible process.