OPTICS

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Across
  1. 1. Produces a concentrated beam of light
  2. 4. Separates white light into colors
  3. 9. Carries light energy
  4. 10. Small particle of light
  5. 12. Distance between two wave peaks
  6. 13. Part of the eye that detects light
  7. 16. Bouncing back of light
  8. 17. Study of light and vision
  9. 19. Used to focus light
  10. 23. Bending of light around edges
  11. 24. Device used to see over obstacles
  12. 25. Blocks light completely
Down
  1. 2. Colorful arc formed by light and water
  2. 3. Allows light to pass through clearly
  3. 5. Instrument used to view distant objects
  4. 6. Bending of light through materials
  5. 7. Number of waves passing a point
  6. 8. Overlapping of light waves
  7. 11. Allows some light to pass through
  8. 14. Instrument used to see tiny objects
  9. 15. Reflects images back
  10. 18. Dark area where light is blocked
  11. 20. Makes objects appear larger
  12. 21. Band of colors from light
  13. 22. Uses light signals for communication