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Reflection mirrors
Reflection mirrors
Reflection mirrors
Reflection mirrors
Reflection mirrors
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Reflection mirrors

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Transcript

  • 1. Light: Reflection and Mirrors<br />7SCIENCE<br />
  • 2. How do reflections relate to light?<br />How are light and reflection related?<br />In mirrors, the image seen is reflected from the surface and into your eye<br />Law of reflection<br />When a light ray strikes a surface and is reflected it follows the law of reflection:<br />The angle of incidence is equal to the angle of reflection<br />True FOR ANY surface, no matter what material it is made of<br />
  • 3. Law of Reflection<br /><ul><li>The angle of incidence is equal to the angle of reflection
  • 4. When a light ray strikes the surface, the line perpendicular (90°) to the surface is called the normal
  • 5. The incoming light ray and the normal make up the angle of incidence
  • 6. The reflected light ray forms an angle called the angle of reflection</li></ul>NORMAL<br />Incoming light<br />
  • 7. Reflection from surfaces<br />Why can you see your reflection in some surfaces such as mirrors and not in others (ex. paper)? <br />Related to the smoothness of the surface<br />Even if something looks smooth, its surface may be uneven or rough and cause light rays to be reflected in many directions <br />This is called diffuse reflection<br />Mirror reflectionsare called normal reflections<br />
  • 8. Reflection from surfaces<br />

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