Introduction to Modern Physics: Quantum Theory and Special Relativity

Have you ever wondered how the universe works at its most fundamental levels, from the speed of light to the behavior of subatomic particles? This course demystifies the two pillars of modern physics—Quantum Mechanics and Special Relativity—by breaking down complex theories into accessible, written explanations. You will gain a clear conceptual understanding of energy, matter, space, and time as understood today. What you'll learn: * Understand the foundational concepts of Special Relativity, including time dilation and length contraction. * Explore the origins of Quantum Theory, starting with the photoelectric effect and wave-particle duality. * Analyze the structure of the atom using the Bohr model and basic quantum numbers. * Apply knowledge of nuclear physics to explain radioactivity, fission, and fusion processes. * Grasp the conceptual basics of quantum information, linking fundamental principles to emerging technologies. The course begins with essential terminology and historical context before moving into detailed explanations of relativistic kinematics and the core postulates of quantum mechanics. Practical examples and written exercises reinforce the theoretical material. This course is designed for absolute beginners, students, and anyone curious about physics who has no prior experience with relativity or quantum theory. No advanced mathematical knowledge is required. Start reading today to unlock the mysteries of the modern physical world.