Book excerpt: Thakur Publication proudly presents the "Thermal Physics and Semiconductor Devices" e-Book, specifically designed for B.Sc 2nd Year students at U.P. State Universities. This comprehensive e-Book serves as an indispensable resource for understanding the fundamental principles and applications of thermal physics and semiconductor devices. Authored by subject matter experts, this English edition e-Book covers the common syllabus prescribed by U.P. State Universities. It delves into the fascinating realms of thermal physics, exploring concepts such as heat transfer, thermodynamics, and kinetic theory. Additionally, it provides a detailed examination of semiconductor devices, including diodes, transistors, and integrated circuits.