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Thermal Radiation Laws: From Blackbody to Cosmic Microwave Background

Thermodynamics Basics → Spectral Radiance

A systematic learning path covering the fundamental laws of thermal radiation, starting with thermodynamics and heat transfer, moving through the electromagnetic spectrum and blackbody concept, and culminating in Planck's law, Wien's law, and the Stefan-Boltzmann law. The path concludes with an application to the cosmic microwave background, demonstrating the laws' real-world relevance.