 So, welcome to IIT Bombay, I am Milindath Ray, I am a professor in mechanical engineering department at IIT Bombay and I give you all my greetings from IIT Bombay and our department. I teach thermodynamics in mechanical department, I teach actually the applied thermodynamics where I teach refrigeration, cryogenic engineering, air condition etcetera. I am going to be your teacher for the next two weeks and taking ahead from where you left from Professor Gayathonday. I know that you have already understood the first law of thermodynamics. I will be teaching you now properties of fluids, wherein we consider water as an important fluid. So, we apply the properties of water for different processes and apply that using first law of thermodynamics. We know that water is used in various power plants, we know water is used in heat exchanger for cooling purposes and therefore, we have to understand how do we design these devices for which we have to see the properties of water at different pressures and temperature, the properties of steam at different pressures and temperature. So, this is what I will teach you in this course related to water phase diagram, properties of water, steam tables, mixture of two phase mixture of water and steam etcetera. I hope you find this course interesting because for mechanical engineers this course is going to be very very important. At the same time what I am going to teach here in this course is going to be more and more practical. I am happy to be a part of this course and I hope that whatever I teach you, you understand it in a better way and please send your feedback when my two weeks get over after teaching properties of fluids. Thank you very much.