Refraction: , bends, when it moves from one medium into another. It bends because its speed changes., , Reflection: , bounces, off the surface of objects., , dispersion: , splitting of light into its component colors, Different wavelengths travel at different speeds through the glass, diffraction: , Light waves will bend if they encounter a small object or have to pass through a small opening in a barrier., , wave interferance: , Light waves can constructively interfere to produce brighter light., Light waves can destructively interfere to produce dimmer light.,

4.29 practice Reflection & Refraction

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