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