U HEAT AND THERMODYNAMICS Thermodynamics deals with various phenomena of energy and related properties of matter, especially the transformation of heat into other forms of energy. An example of such transformation is the process converting heat into mechanical work. Thermodynamics thus plays central role in technology, since almost all the raw energy available for our use is liberated in the form of heat. in this topic we shall their significance and applications. KINETIC THEORY OF GASES The behavior of gases is well accounted for by the kinetic theory based on microscopic approach. Evidence in favor of the theory is exhibited in diffusion of gases and Brownian motion of smoke particles etc. The follow...