Light Reflection and Refraction. Reflection Law of Reflection.

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Presentation transcript:

Light Reflection and Refraction

Reflection Law of Reflection

“normal” line ii rr The angle of incidence,  i, is equal to the angle of reflection,  r.  i =  r

1. Incident ray of light 2. Reflected ray of light 3. Backward Extension Lines Lines extended backward from the reflected rays of light

Plane (Flat) Mirrors

Curved Mirrors “Objects in Mirror are Closer than they Appear!”… Why?

Curved Mirrors Or Not!

Refraction Angle of Refraction Optical Density

Refraction Snell’s Law –the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant n i sin  i = n r sin  r Index of Refraction –n substance = c / v substance

Dispersion of Light Dispersion –the separation of light into the spectrum

Dispersion of Light Water droplets act as lenses causing a dispersion of light, this light then reflects off of the back of the droplet

Homework! Read 29.1 – 29.5

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