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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Refraction Action

Optical Density, Light Speed, and n

​The Direction of Bending

​The Lone Exception

​Refraction and Angles

​Snell's Law of Refraction

​Refraction and Ray Tracing

​Determining the Index of Refraction

​Boundary Behavior

​Total Internal Reflection

​The Critical Angle

​Light Dispersion

​Rainbow Formation

​Mirages

​Refraction by Lenses

​Lenses and Image Formation

​Converging Lenses: Ray Diagrams

​Converging Lenses: Object-Image Relations

​Diverging Lenses: Ray Diagrams

​Diverging Lenses: Object-Image Relations

​Mathematics of Lenses

​Refraction and the Eye

​Accommodation and Vision

​Farsightedness and Its Correction

Nearsightedness and Its Correction

 
 
 

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