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The Ray Model of Light

The Ray Model of Light. Light travels in a straight line. Light Ray A line and arrow representing the direction and straight-line path of light . Incident Light Light emitted from a source that strikes an object. Incident Light Ray. Properties of Light .

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The Ray Model of Light

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  1. The Ray Model of Light

  2. Light travels in a straight line.

  3. Light Ray • A line and arrow representing the direction and straight-line path of light

  4. Incident LightLight emitted from a source that strikes an object Incident Light Ray

  5. Properties of Light • When light strikes matter, it can be… 1. Transmitted – light passes through a substance 2. Reflected – light bounces off an object 3. Absorbed – light is absorbed by object and converted to heat

  6. Matter can be classified as: • Transparent • Transmits all or almost all incident light, object can clearly be seen through material • Ex. Clear glass

  7. Matter can be classified as: • Translucent • transmits some incident light but absorbs or reflects the rest, objects are not clearly seen through material

  8. Matter can be classified as: • Opaque • Does not transmit any incident light, objects are not seen through material

  9. Flat Mirrors • Image: • A reproduction of an original object that is produced through the use of light • Mirror • A polished surface reflecting an image

  10. Mirrors

  11. Terminology of Reflection

  12. Terminology of Reflection NORMAL

  13. Terminology of Reflection NORMAL Incident Ray

  14. Terminology of Reflection NORMAL Incident Ray Angle of incident

  15. Terminology of Reflection NORMAL Incident Ray Angle of incident Reflected Ray

  16. Terminology of Reflection NORMAL Incident Ray Angle of reflection Angle of incident Reflected Ray

  17. Try this: • Classify each of these materials as transparent, translucent or opaque: • A textbook • Frosted glass • A single sheet of tissue paper • A clean sheet of glass • A rock • Apple juice • Sunglasses

  18. Try this: • Classify each of these materials as transparent, translucent or opaque: • A textbook- OPAQUE • Frosted glass- TRANSLUCENT • A single sheet of tissue paper- TRANSLUCENT • A clean sheet of glass- TRANSPARENT • A rock- OPAQUE • Apple juice- TRANSLUCENT • Sunglasses- TRANSPARENT

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