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Introduction to Basic Ray Optics

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Introduction to Basic Ray Optics

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  • Author: Ian Schwartz
When an optical wave travels between mediums, its velocity changes and it is deflected through a phenomenon known as refraction. The magnitude of these changes (relative to the speed of light in a vacuum) depends on a characteristic value for each material called the index of refraction, typically denoted by the letter n Air has an index of refraction very close to 1.0, while glass typically has an index of refraction near 1.5.

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