This book delves into the science of heat, exploring its behavior and mathematical principles. Emerging centuries after groundbreaking works in mechanics and motion, it establishes a new domain of physics dedicated to understanding and quantifying heat phenomena. The author meticulously examines heat's fundamental properties, including its storage, transmission, and conduction through various materials. Through rigorous observation and experimentation, this book unveils the mathematical laws governing heat's movement and interaction with the environment. Beyond theoretical foundations, the text delves into practical applications, addressing topics like terrestrial temperatures, climate variations, and the impact of heat on the Earth's atmosphere and oceans. It further explores the intriguing realm of radiant heat, encompassing phenomena like reflection and the equilibrium of heat exchange between bodies and the vast expanse of space. Ultimately, this book illuminates the profound influence of heat on our planet and the universe, demonstrating how a seemingly complex and chaotic element adheres to elegant mathematical principles that shape the world around us.