Electrons and Photons: Foundations of Modern Physics

Understanding the dual nature of light and matter is one of the most exciting breakthroughs in physics, yet grasping how electrons and photons interact can feel overwhelming. This course simplifies these complex quantum concepts through clear, step-by-step written explanations. You will transition from basic classical physics concepts to confidently analyzing quantum phenomena, solving photoelectric effect equations, and understanding the wave-particle duality that governs modern technology. What you'll learn: Understand the fundamental properties of electrons, photons, and the dual nature of radiation; Analyze the photoelectric effect, Einstein’s photoelectric equation, and the concept of work function; Calculate de Broglie wavelengths for particles and understand wave-particle duality; Explore the historical experiments that shaped modern quantum physics, including Hertz's and Lenard's observations; Apply mathematical formulas to solve standard exam-style problems on photon energy and momentum. The course starts with essential terminology and historical context, establishing a strong conceptual baseline. You will then progress through detailed written explanations of mathematical derivations, experimental setups, and practical problem-solving exercises. Designed for beginners, high school physics students, and exam aspirants looking for a clear, conceptual guide, this course requires no prior advanced physics knowledge. Start reading today to master the core principles of modern physics at your own pace.