THE FIRST LAW OF THERMODYNAMICS
1. INTRODUCTION The first law of thermodynamics is a formulation of the law of conservation of energy, adapted for thermodynamic processes. It distinguishes in principle two forms of energy transfer, heat and thermodynamic work for a system of a constant amount of matter. As we all know energy neither can be created nor destroyed, it is just transformed from one form to another. This is called the 'Law of conservation of energy '.The first law of thermodynamics is just an upgraded form of the law of conservation of energy. Energy is observed in various forms but basically, the energy is subdivided into two types i.e heat energy and thermodynamic work. The first law of thermodynamics is formulated by ∆U=Q - W, Wherein ∆U denotes the change in internal energy of a closed system. Q denotes the quantity of energy supplied to the system as heat and W denotes the work done. · For example...