Foundations of Geometric Optics: Reflection, Lenses, and Light Behavior

Light is all around us, yet the rules governing how it bounces, bends, and travels are often misunderstood. This text-based course demystifies the fundamental physics of light, turning complex optical phenomena into clear, digestible concepts. You will transition from simply observing optical effects to deeply understanding the physics behind them. By exploring how light interacts with different media and lenses, you will gain the confidence to analyze real-world optical systems and solve foundational physics problems. What you'll learn: - Understand the fundamental laws of reflection and refraction of light - Explain the phenomenon of total internal reflection and its modern application in fiber optics - Calculate optical power and analyze how light behaves when passing through converging and diverging lenses - Explore the human eye as a natural optical system and understand common vision correction methods - Practice your knowledge with structured written self-assessment tests The course begins with core terminology and the basic behavior of light rays, then progresses to complex lens calculations and biological optics. You will move systematically from foundational theory to practical applications and conceptual self-checks. This course is designed specifically for beginners, high school students, or science enthusiasts looking for a clear, math-supported introduction to optics with no prior physics background required. Start reading today to unlock the mysteries of how we see and manipulate light.