Chapter 2.3 Notes
Name: ____________________ # ___________ ReFLection and ReFRaction
Date: ________________ Per. ______________ Essential Questions: What does the Law of Reflection state? Why do light rays bend when they enter a new medium at an angle? What determines the types of images formed by concave and convex lenses? Law of ReFLection: The angle of ____________________________ is equal to the angle of ________________________________. Where the incidence wave is the ___________________________ wave and the reflected wave is the one you see. Plane mirrors: a flat sheet of glass that has a smooth, silver­colored coating on one side. ●
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The coating reflects light. The image reflected is a________________________________­one that is upright and forms from where light seems to come from. Mirrors: Concave and Convex Concave mirrors​ : a mirrored surface that curves in. “CAVE IN” ​
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form either ​
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virtual or ​real images. Examples include make up mirror, flashlights, car headlights ___________________________
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are upside­down images that form when rays actually meet Convex mirrors​: a mirrored surface that curves outward. Convex mirrors are used in cars as passenger­side mirrors, and in banks, grocery stores, parking garages, and offices as security and safety mirrors. Always virtual, upright and ________________. ReFRaction: When light rays enter a medium at an angle, the change in speed causes the rays to bend, or change direction.
Refraction Index: Convex Lens: An object's position relative to the focal point determines whether a convex lens forms a real image or a virtual image. Concave Lens: Light waves bend away, or diverge, when they pass through a concave lens, never meeting. Produce only VIRTUAL images. ​