ICT CORNER

ICT CORNER Step4 Step2 Step1 Step3 - - - - . Learning Objectives In this unit, the student is exposed to • necessity of kinetic theory of gases • the microscopic origin of pressure and temperature • correlate the internal energy of the gas and translational kinetic energy of gas molecules • meaning of degrees of freedom • calculate the total degrees of freedom for mono atomic, diatomic and triatomic molecules • law of equipartition of energy • calculation of the ratio of C P and C V • mean free path and its dependence with pressure, temperature and number density • Brownian motion and its microscopic origin KINETIC THEORY . . Introduction Thermodynamics is basically a macroscopic science. We discussed macroscopic parameters like pressure, temperature and volume of thermodynamical systems in unit . In this unit we discuss the microscopic origin of pressure and temperature by considering a thermodynamic system as collection of particles or molecules. Kinetic theory relates pressure and temperature to molecular motion of sample of a gas and it is a bridge between Newtonian mechanics and thermodynamics. The present chapter introduces the kinetic nature of gas molecules.