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Black-body radiation is a fundamental building block in many areas of modern physics, akin to a goose that lays golden eggs in the eyes of physicists. It has dominated the forefront of theoretical physics for 70 years. Black-body radiation is the only physical scenario that involves the three universal constants h, kB, and c simultaneously, and it is closely related to optics, electromagnetism/electrodynamics, thermodynamics, statistical mechanics, relativity, and solid-state physics. The study of black-body radiation has not only given rise to quantum mechanics but also led to many technological applications. Many leading minds in physics have left their indelible marks on the field. Examining the historical development of black-body radiation research, including the evolution of ideas, concepts, and methodologies, offers a valuable perspective on the broader field of physics.
This book stems from the author's first foray into exploring the origins of physics by examining existing research. It is a valuable resource for anyone with a curious mind beyond high school, particularly those with an interest in scientific research.