1 / 54

Figure 26-1 Wave Fronts and Rays

Figure 26-1 Wave Fronts and Rays. Figure 26-2 Spherical and Planar Wave Fronts. Figure 26-3 Reflection from a Smooth Surface. Reflection. Law of reflection q i = q r. Figure 26-4 Reflection from Smooth and Rough Surfaces. Figure 26-6 Locating a Mirror Image. Figure 26-8 Spherical Mirrors.

uttara
Download Presentation

Figure 26-1 Wave Fronts and Rays

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Figure 26-1Wave Fronts and Rays

  2. Figure 26-2Spherical and Planar Wave Fronts

  3. Figure 26-3Reflection from a Smooth Surface

  4. Reflection • Law of reflection qi=qr

  5. Figure 26-4Reflection from Smooth and Rough Surfaces

  6. Figure 26-6Locating a Mirror Image

  7. Figure 26-8Spherical Mirrors

  8. Figure 26-9Concave and Convex Mirrors

  9. Figure 26-10Parallel Rays on a Convex Mirror

  10. Figure 26-12Parallel Rays on a Concave Mirror

  11. Figure 26-13Spherical Aberration and the Parabolic Mirror

  12. Figure 26-14Principal Rays Used in Ray Tracing for a Concave Mirror

  13. Figure 26-15Principal Rays Used in Ray Tracing for a Convex Mirror

  14. Figure 26-17Image Size and Location in a Convex Mirror

  15. Figure 26-18Image Formation with a Concave Mirror

  16. Example 26-3Image Formation

  17. Mirrors The mirror equation

  18. Mirrors Magnification

  19. Mirrors do =distance of the object from the mirror di =distance of the image from the mirror f= focal length of the mirror

  20. Mirrors Distances in front of the mirror are positive. Distances behind the mirror are negative.

  21. Table 26-1Imaging Characteristics of Convex and Concave Spherical Mirrors

  22. Mirrors Mirror problems: 19, and 21-24 on page 883. Ray tracing worksheet.

  23. Refraction When light transitions between two media with different indices of refraction, it will change direction if it transitions at an angle to the demarcation between the two media.

  24. Refraction Angles of incidence and angles of refraction are measured in reference to a line normal (perpendicular) to the line of demarcation between media.

  25. The index of refraction (n) for a medium is defined as the speed of light in vacuum (c) divided by the speed of light in the medium(v).

  26. Exercise 26-4Find the angle of refraction

  27. Refraction There is a mathematical relationship that is used to calculate the amount of bending called Snell’s Law.

  28. Refraction

  29. Refraction If a ray is transitioning from a medium of lesser n to a medium of greater n it will bend toward the normal.

  30. Refraction If a ray is transitioning from a medium of greater n to a medium of lesser n it will bend away from the normal.

  31. Figure 26-24Light Propagating Through a Glass Slab

  32. Refraction Problems 37-42 on page 883.

  33. Lenses Refractive properties of materials are useful in manipulating light for imaging purposes through the use of lenses.

  34. Lenses Lenses consist of two main types converging and diverging.

  35. Figure 26-29A Variety of Converging and Diverging Lenses

  36. Figure 26-32The Three Principal Rays Used for Ray Tracing with Convex Lenses

  37. Figure 26-33The Three Principal Rays Used for Ray Tracing with Concave Lenses

  38. Figure 26-35aRay Tracing for a Convex Lens

  39. Figure 26-34The Image Formed by a Concave Lens

  40. Lenses The lens equation

  41. Lenses Magnification

  42. Lenses do =distance of the object from the lens di =distance of the image from the lens f= focal length of the lens

  43. Lenses Focal length f is positive for converging(convex) lenses f is negative for diverging (concave) lenses Magnification m is positive for upright images (same orientation as the object) m is negative for inverted images (opposite orientation of object)

  44. Lenses Image distance diis positive for real images (on the opposite side of the lens from the object) diis negative for virtual images (on the same side of the lens from the object) Magnification m is positive for upright images (same orientation as the object) m is negative for inverted images (opposite orientation of object)

  45. Lenses do is positive for real objects (from which light diverges) do is negative for virtual objects (toward which light converges)

  46. Lenses Problems 63-67 on page 885. Ray tracing worksheet.

  47. Dispersion of light The index of refraction in a substance is different for light of different frequencies.

  48. Dispersion of light The greater the frequency, the greater the index of refraction.

  49. Dispersion of light Violet light will bend more than red light or green light, and therefore a separation of colors occurs.

More Related