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Law of Reflection

Law of Reflection. Angle of incidence = Angle of reflection. The Law of Reflection. In other words, light gets reflected from a surface at ____ _____ angle it hits it. The same !!!. Clear vs. Diffuse Reflection. Smooth, shiny surfaces have a clear reflection:.

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Law of Reflection

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  1. Law of Reflection www.assignmentpoint.com

  2. Angle of incidence = Angle of reflection The Law of Reflection In other words, light gets reflected from a surface at ____ _____ angle it hits it. The same !!! www.assignmentpoint.com

  3. Clear vs. Diffuse Reflection Smooth, shiny surfaces have a clear reflection: Rough, dull surfaces have a diffuse reflection. Diffuse reflection is when light is scattered in different directions www.assignmentpoint.com

  4. Using mirrors Two examples: 2) A car headlight 1) A periscope www.assignmentpoint.com

  5. Colour White light is not a single colour; it is made up of a mixture of the seven colours of the rainbow. We can demonstrate this by splitting white light with a prism: This is how rainbows are formed: sunlight is “split up” by raindrops. www.assignmentpoint.com

  6. The colours of the rainbow: Red Orange Yellow Green Blue Indigo Violet www.assignmentpoint.com

  7. Adding colours White light can be split up to make separate colours. These colours can be added together again. The primary colours of light are red, blue and green: Adding blue and red makes magenta (purple) Adding blue and green makes cyan (light blue) Adding red and green makes yellow Adding all three makes white again www.assignmentpoint.com

  8. Homework Seeing colour The colour an object appears depends on the colours of light it reflects. For example, a red book only reflects red light: White light Only red light is reflected www.assignmentpoint.com

  9. A pair of purple trousers would reflect purple light (and red and blue, as purple is made up of red and blue): Purple light A white hat would reflect all seven colours: White light www.assignmentpoint.com

  10. Using coloured light If we look at a coloured object in coloured light we see something different. For example, consider a football kit: Shirt looks red White light Shorts look blue www.assignmentpoint.com

  11. Red light Shirt looks red In different colours of light this kit would look different: Shorts look black Shirt looks black Blue light Shorts look blue www.assignmentpoint.com

  12. Homework Some further examples: www.assignmentpoint.com

  13. Red Filter Magenta Filter Using filters Filters can be used to “block” out different colours of light: www.assignmentpoint.com

  14. Investigating filters www.assignmentpoint.com

  15. Red Blue Green White Yellow Cyan Magenta www.assignmentpoint.com

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