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| narrow beam of light traveling in a straight line |
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| material through which a wave can travel |
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| occurs when a wave strikes an object or surface and bounces off |
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| states that the angle of incidence is equal to the angle of reflection |
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| single point in the optical axis of a concave mirror where reflected light rays pass through |
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| distance along the optical axis from the center of a concave mirror to the focal point |
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| bending of a wave as it moves from one medium to another medium due to a change in speed |
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| transparent object that has at least one curved surface that causes light to bend |
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| converging lens that is thicker in the middle than at its edges |
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| lens that is thicker at its edges than in the middle and causes light rays traveling parallel to the optical axis to diverge |
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| uses 2 covex lenses to gather light and form an image of a distant object |
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