![Page 1: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/1.jpg)
MIRANDA CALANDROSPRING 2011
Waves Wrap-Up
![Page 2: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/2.jpg)
Warm up
Go to the online textbook and open chapter 14
Complete problems 15-19 on p. 386
![Page 3: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/3.jpg)
Behaviors of Waves
Interference – two waves occupy the same space at the same time Constructive – combine to produce a larger wave Destructive – waves subtract from each other or
cancel each other out completely
![Page 4: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/4.jpg)
Reflection – a wave strikes an object and bounces off
![Page 5: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/5.jpg)
Types of Reflection
![Page 6: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/6.jpg)
Total Internal Reflection
The critical angle of incidence has been exceeded; a wave (light) strikes an object and is continually reflected throughout a material.
Ex.: Fiber optic cable
![Page 7: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/7.jpg)
Critical Angle
Θc = n2/n1
For air, sinθc = 1/n1
![Page 8: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/8.jpg)
Example 1
The index of refraction for water is 1.33. Above the water is air. What is the critical angle of incidence for light starting inside the water and passing into the air above it?
![Page 9: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/9.jpg)
Example 2
A diamond with an index of refraction of 2.42 is surrounded by air. If a ray of light originating inside the diamond strikes the surface of a facet at an angle of 27 degrees from the normal, will the ray be refracted or will it experience total internal reflection?
![Page 10: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/10.jpg)
Diffraction
Diffraction – a wave passes through an opening and bends and changes direction
![Page 11: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/11.jpg)
Refraction - waves bend and change directions and speed when they travel from one medium into another
![Page 12: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/12.jpg)
Law of Refraction (Snell’s Law)
n1 sinθ1 = n2sinθ2
n=index of refraction (different for every medium)
n(air) = 1.00
![Page 13: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/13.jpg)
Example 1
A ray of light passes through air and strikes a piece of glass at an angle of 45 degrees from the normal. If the index of refraction of glass is 1.60, what will be the angle of refraction?
![Page 14: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/14.jpg)
Example 2
Light passes through air and strikes the surface of a piece of glass at an angle of 58 degrees from the normal. The angle of refraction is 33 degrees measured from the normal. Calculate the index of refraction for the glass.
![Page 15: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/15.jpg)
Polarization of Light
When light passes through two polarized filters perpendicular to each other, light is completely blocked.
![Page 16: MIRANDA CALANDRO SPRING 2011 Waves Wrap-Up. Warm up Go to the online textbook and open chapter 14 Complete problems 15-19 on p. 386](https://reader035.vdocuments.net/reader035/viewer/2022062620/551b9edc550346942b8b56f4/html5/thumbnails/16.jpg)
Doppler Effect
Change in frequency perceived by an observer moving relative to a wave source.