Geometrical Optics: Fundamentals of Light, Lenses, and Mirrors

Light is all around us, yet its behavior follows precise physical laws that govern everything from simple magnifying glasses to advanced communication networks. Understanding how light travels, bends, and reflects is key to mastering foundational physics and engineering. This text-based course guides you from absolute beginner to confidently analyzing optical systems, helping you trace light rays, calculate image positions, and understand the core principles of reflection and refraction.\n\nWhat you'll learn:\n- Understand the core principles of light propagation, reflection, and refraction\n- Calculate image formation using the mirror and thin lens formulas\n- Trace light rays through flat surfaces, spherical mirrors, and various lens types\n- Analyze optical phenomena such as total internal reflection and dispersion\n- Explore modern applications of optics, including basic fiber optic communication principles\n- Solve practical physics problems systematically using standard sign conventions\n\nStarting with fundamental definitions of light and the ray approximation, the course progresses through reflection on plane and spherical mirrors, refraction at interfaces, lens behavior, and real-world optical devices. This course is designed for beginners, students starting their physics journey, or anyone curious about the science of light, with no advanced prerequisites required. Begin reading today to build a strong, intuitive foundation in the physics of light.