Chapter 17 Reflection and Refraction. Ch 17.2 Applications of Reflected and Refracted Light.

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Presentation transcript:

Chapter 17 Reflection and Refraction

Ch 17.2 Applications of Reflected and Refracted Light

A. Total internal reflection B. Effects of refraction C. Dispersion of Light I. Applications of Reflected and Refracted Light

A. Total internal reflection Critical angle Θi Θr ΘiΘi ΘrΘr

Calculating the critical angle n i sin Θ i = n r sin Θ r Θ i = Θ c sin Θ c = n r / n i Note: you can only have total internal reflection when going from a more dense to a less dense medium. (ex. water to air) Applications of total internal reflection.

B. Effects of Refraction Positions of objects in liquids Mirage effect Extended daylight

C. Dispersion of Light The separation of light into its spectrum Other materials that disperse light –Diamond Spectra of different light sources Formation of rainbows

Homework –Chapter 17 review problems