Foundations of Modern Physics: Quantum Theory and the Atom

The classical view of the universe breaks down at the smallest scales. Modern physics introduces revolutionary concepts necessary to understand matter and energy at the atomic level. This course provides a clear, conceptual introduction to the foundational ideas of modern physics. You will move beyond classical mechanics to understand how energy and matter behave, laying the groundwork for studying quantum mechanics and nuclear science. What you'll learn: * Understand the historical context and limitations of classical physics that necessitated the quantum revolution. * Analyze the Photoelectric Effect and Compton Scattering to grasp the particle nature of electromagnetic radiation. * Apply the De Broglie hypothesis to explain the wave nature of matter, establishing wave-particle duality. * Learn the Bohr model of the atom, its successful predictions for the hydrogen spectrum, and its inherent limitations. * Practice interpreting fundamental quantum concepts, including energy quantization and the Heisenberg Uncertainty Principle. * Explore the basics of nuclear stability, isotopes, and the relationship between mass and energy (E=mc²). The course begins by defining the quantum revolution and Planck's theory, then systematically explores the dual nature of light and matter through key experiments. Finally, it culminates in a detailed examination of atomic structure, from the early Bohr model to the introduction of quantum numbers and orbitals. This course is designed for absolute beginners in physics or science students seeking a strong conceptual understanding of modern physics. No prior knowledge of advanced calculus or quantum mechanics is required. Start reading today and unlock the secrets of the subatomic world.