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HW #3, Due Sep. 14

HW #3, Due Sep. 14. Chapter 2 P23, P24, PH13, PH15, PM2. Undergraduate Research Opportunity. Positions are available for undergraduate students to work on optics related research or educational projects. Sponsored by UNM/NASA PURSUE Program

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HW #3, Due Sep. 14

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  1. HW #3, Due Sep. 14 Chapter 2 P23, P24, PH13, PH15, PM2

  2. Undergraduate Research Opportunity Positions are available for undergraduate students to work on optics related research or educational projects. Sponsored by UNM/NASA PURSUE Program $8/hour 15 hour/week Anyone who is interested should contact me ASAP.

  3. Lecture 6 (chapter 2 continued) • Quick Review: • Reflection and mirrors • Sub Sun and Sun Pillars • Multiple Reflection • This Lecture: • Refraction • Total Internal Reflection • Refraction in Nature (Mirages, Halos, Rainbows,..)

  4. Grazing Incidence Reflection (glass windows, water surfaces, waxed floors, etc.) • Reflectivity (how much is reflected?)

  5. Who sees me in the mirror?! image (field of view) Simply apply law of reflection and trace the rays…

  6. Sun Pillars and Sub Suns

  7. Ice Crystals

  8. Sub Sun

  9. http://www.members.tripod.com/~regenbogen/englisch/atlas.htm

  10. Sun Pillar

  11. Multiple ReflectionsExample: Second Surface Mirrors

  12. Corner Reflectors Retroreflectors

  13. RefractionRecall: velocity of lightv= c/n

  14. *Refraction 1 http://microscopy.fsu.edu/primer/java/refraction/index.html http://wigner.byu.edu/LightRefract/LightRefract.html http://www.techxhome.com/lightsite/optics/refraction/boyFish.html Fish Tank

  15. Examples Material Refractive Index (n) Air 1.0003 Water 1.33 Glycerin 1.47 Immersion Oil 1.515 Glass 1.52 Flint 1.66 Zircon 1.92 Diamond 2.42 Silicon 4

  16. Law of Refraction N i I n1 Air (for example) glass or water or … n2 R r • The Refracted ray (R ) lies in the plane defined by Incidence ray (I) and surface Normal (N) • The Refracted ray (R ) lies on the opposite side of N as the incident ray I, and • The Refracted ray (R ) makes an angle r that satisfies the Snell’s law: Angle of Incidence  Index of refraction in medium 1almost equals toAngle of Refraction  Index of refraction in medium 2 (for small angles)

  17. Snell’s Law (exact) c a  Sine of an angle

  18. Now, consider this ….

  19. Total Internal Reflection *Total Internal Reflection (Optical Fiber) http://www.techxhome.com/lightsite/optics/refraction/fiberOptic.html

  20. Total Internal Reflection

  21. Prisms as perfect reflectors: See Fig. 2.56 in the Text

  22. Diamond Brilliance (TIR), Fire (dispersion) and Flash

  23. Next Refraction in Nature Mirages, Rainbows, Halos, Sun Dogs….

  24. sunset MiragesandAtmospheric Distortions mirage

  25. Mirage

  26. Dispersion Refractive Index varies with Wavelength : n() Dispersion in a prism * Prism Refraction http://microscopy.fsu.edu/primer/java/prism/index.html http://www.techxhome.com/lightsite/optics/refraction/monoPrism.html refraction & refl. http://www.techxhome.com/lightsite/optics/dispersion/whitePrism.html dispersion

  27. Rainbow

  28. Rainbow *Rainbow http://www.phy.ntnu.edu.tw/java/Rainbow/rainbow.html http://www.techxhome.com/lightsite/optics/dispersion/raindrop.html rain drop

  29. Ice Crystals

  30. Sun Dogs

  31. Halos

  32. 22 degree halo

  33. 22 degree halo

  34. 46 degree halos

  35. Chapter 3 Reflection in Curved Mirrors

  36. Mirrors *Concave Mirrors http://www.techxhome.com/lightsite/optics/mirrors/sphereMirror.html *Concave Lens: virtual image *Convex Mirrors http://www.techxhome.com/lightsite/optics/mirrors/mirrorAberr.html spherical aberration

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