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Reflection and Mirrors

Reflection and Mirrors . Outline Notes pages 113-118. 1. Reflection of Light Rays. Rays: straight line used to represent a light wave The two ways in which a surface can reflect light are regular reflection and diffuse reflection. a. Regular Reflection .

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Reflection and Mirrors

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  1. Reflection and Mirrors Outline Notes pages 113-118

  2. 1. Reflection of Light Rays Rays: straight line used to represent a light wave The two ways in which a surface can reflect light are regular reflection and diffuse reflection

  3. a. Regular Reflection occurs when parallel rays of light hit a smooth surface

  4. b. Diffuse Reflection When parallel rays of light hit a bumpy or uneven surface

  5. 2. Plane Mirrors Flat sheet of glass that has a smooth, silver-colored coating on one side Image: a copy of an object formed by reflected or refracted rays of light

  6. a. What Kind of Image Forms Virtual image: image you see in a plane mirror A plane mirror produces a virtual image that is upright and the same size as the object Left and right of the image are reversed

  7. b. How Images Form Some light rays from the object strike the mirror and reflect towards the eye The brain treats the light rays as if they had come from behind the mirror

  8. 3. Concave Mirrors A mirror with a surface that curves inward like the inside of a bowl Optical axis: imaginary line that divides a mirror in half Focal point: point at which rays parallel to the optical axis meet

  9. a. Representing How Images Form Ray diagrams are used to show when a focused image forms in a concave mirror.

  10. b. Determining the Type of Image Concave mirrors can form either virtual images or real images. Real image: form when rays actually meet

  11. 4. Convex Mirrors A mirror with a surface that curves outward Because the rays never meet, images formed by convex mirrors are always virtual and smaller than the object.

  12. Concave? Or convex?

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