Geometric Optics

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Across
  1. 2. A substance through which radiation travels.
  2. 5. Allowing some radiation through while scattering it enough to obscure clear details.
  3. 9. A group of rays traveling together in a particular direction.
  4. 11. A numerical measure describing how strongly a material affects the speed of radiation.
  5. 13. Curved inward toward the interior of a surface or object.
  6. 14. Having the same vertical orientation as the original object.
  7. 18. A property describing waves that maintain a fixed phase relationship.
  8. 20. Relating to differences produced by different wavelengths of radiation.
  9. 26. Describing radiation that leaves a material after passing through it.
  10. 27. Describing an image that can be formed by actual convergence of rays.
  11. 28. Blocking visible radiation rather than allowing it to pass through.
  12. 30. Relating to a sideways displacement measured across an optical arrangement.
  13. 31. The ratio comparing the size of an image with the size of the original object.
  14. 34. An idealized straight path used to represent the direction of propagation.
  15. 35. The return of radiation from a surface after reaching it.
  16. 38. Describing an image that cannot be formed directly on a screen.
  17. 39. Relating to the position or properties associated with a focus.
  18. 40. The combined effect produced when two or more waves overlap.
  19. 41. The amount of rotation between two intersecting lines or directions.
  20. 44. A polished surface that sends incoming radiation back.
  21. 45. The point where two straight sides meet or the central point of a curved optical surface.
  22. 46. A unit used to express the optical power of a lens.
  23. 47. A reference line passing through the central region of an optical system.
  24. 48. The speed of propagation together with its direction.
  25. 50. The spreading and bending of waves around obstacles or through narrow openings.
Down
  1. 1. To spread apart or move away from a common point.
  2. 3. The distance between corresponding points on successive waves.
  3. 4. A departure from ideal image formation caused by limitations in an optical system.
  4. 6. A transparent shaped object that changes the paths of incoming rays.
  5. 7. A visual representation produced by the meeting or apparent meeting of rays.
  6. 8. The separation of different wavelengths when they travel through a material.
  7. 10. A region containing no material substance through which radiation propagates.
  8. 12. The number of complete wave cycles occurring during one second.
  9. 15. A transparent solid with flat surfaces that can alter and separate incoming radiation.
  10. 16. A reversal in vertical orientation between an object and its image.
  11. 17. Describing rays traveling close to the central axis of an optical system.
  12. 19. A physical body that serves as the source or subject of an optical image.
  13. 21. Curved outward away from the interior of a surface or object.
  14. 22. The ability of an optical element to cause convergence or divergence.
  15. 23. An opening that controls how much radiation enters an optical system.
  16. 24. The change in direction that occurs when radiation passes between materials with different optical properties.
  17. 25. Allowing most visible radiation to pass through with little scattering.
  18. 29. Electromagnetic radiation that can travel through empty space and carry visual information.
  19. 32. An imaginary line perpendicular to a surface at a particular point.
  20. 33. An ordered range of electromagnetic wavelengths or frequencies.
  21. 36. To move toward a common point or location.
  22. 37. Describing radiation that reaches a surface or boundary.
  23. 42. A measure of how strongly a surface departs from being flat.
  24. 43. The maximum displacement of a wave from its equilibrium position.
  25. 49. The location where rays converge or appear to originate.