Refraction and Lenses
Our Refraction and Lenses unit represents an effort to apply optics principles to an understanding of refraction, Snell's law, total internal reflection, dispersion, mirage formation, converging and diverging lenses, and image formation. The set of Video Tutorials below describe all sorts of applications of refraction principles to the analysis of physical situations.
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What is Refraction?
Optical Density, Light Speed, and n
The Direction of Bending
Snell's Law of Refraction
Snell's Law and Ray Tracing
Determining the Index of Refraction
Total Internal Reflection
The Critical Angle
Light Dispersion and Rainbows
Refraction in a Non-Uniform Medium
Refraction by Lenses
Lenses and Image Formation
Converging Lenses: Ray Diagrams
Converging Lenses: Object-Image Relations
Diverging Lenses: Ray Diagrams and Object-Image Relations
Mathematics of Lenses
Refraction and the Eye
Farsightedness and Nearsightedness
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