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CHAPTER 6 REFRACTION RAINBOWS Picture #43 1-inch-wide Geodesic-shaped Leaded-crystal Sphere Lead oxide, “PbO” Refraction is a term that pervades the study of quartz optics and iris rainbows. Let’s look at two distinct situations that yield two entirely different effects. Refractory Rays #1 Refraction is the bending of light between three clear media. The media can […]

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