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REFLECTION OF LIGHT
Light
Part 1 – Properties of Light ,[object Object],Laser
[object Object],At this speed it can go around the world 7.5 times in one second.
[object Object],[object Object],2)  When a starting pistol is fired we see the smoke first and then hear the bang.
[object Object],A  luminous  object is one that produces light. A  non-luminous  object is one that reflects light. Luminous objects Nonluminous objects
[object Object],Shadows are places where light is “blocked”: Rays of light
Properties of Light summary ,[object Object],[object Object],[object Object],[object Object]
How do we see objects?
[object Object],Homework
Reflection
Reflection of Light ,[object Object]
[object Object],[object Object]
 
Specular Reflection ,[object Object]
Diffuse Reflection ,[object Object]
[object Object]
[object Object]
 
The Law of Reflection   The incident ray, the reflected ray, and the normal to the surface all lie in the same plane, and the angle of reflection  θ r equals the angle of incidence  θ i.
 
[object Object]
[object Object]
[object Object]
[object Object]
Reflection ,[object Object],Incident ray Normal Reflected ray Angle of incidence Angle of reflection Mirror
[object Object],Angle of incidence = Angle of reflection In other words, light gets reflected from a surface at ____ _____ angle it hits it. The same !!!
 

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Properties of light

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  • 9. How do we see objects?
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  • 20. The Law of Reflection The incident ray, the reflected ray, and the normal to the surface all lie in the same plane, and the angle of reflection θ r equals the angle of incidence θ i.
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