The subject of 'Principles of Environmental Physics' explores the physical processes and phenomena that shape and influence the natural environment. It focuses on understanding the interactions between the atmosphere, hydrosphere, lithosphere, and biosphere. Key concepts covered include energy transfer, climate dynamics, atmospheric circulation, hydrological cycles, and the behavior of pollutants in the environment. The objectives of studying this subject are to develop a comprehensive understanding of the physical principles governing environmental systems, analyze and model environmental processes, and evaluate the impact of human activities on the environment. By studying the principles of environmental physics, students gain insights into the intricate mechanisms that drive environmental changes and acquire tools to address environmental challenges. Ultimately, 'Principles of Environmental Physics' equips students with the knowledge and skills to contribute towards sustainable practices and the preservation of our natural world.