Across
- 1. 300,000,000 m/s (c)
- 5. the opening left by the iris
- 11. changes the shape of the lens to keep things in focus
- 13. electromagnetic waves do not have to travel through this
- 15. the colored part of the eye that controls how much light enters
- 17. the lens of the eye
- 18. light travels fastest in this
- 19. where light is focused in the eye, on rod and cone cells
- 20. the part of the electromagnetic spectrum we can see
- 22. the bending of light
- 24. farsightedness
- 26. light passes through something
- 27. see through
- 28. nothing with this can travel faster than the speed of light
- 30. light bounces back off of something
- 31. the interaction of waves with other waves
- 32. not see through
- 34. the energy transferred by electromagnetic waves
- 35. packets of variable amounts of light energy
Down
- 2. the complete range of wavelengths of electromagnetic waves
- 3. the kind of interference when waves overlap
- 4. takes signals from the retina and sends them to the brain
- 6. nearsightedness
- 7. the angle of incidence equals the angle of reflection
- 8. a transverse wave composed of an oscillating electric field and a magnetic field that oscillates perpendicular to the electric field
- 9. light enters a medium and does not leave it
- 10. the type of lens that focuses horizontally traveling light rays through a single focal point
- 12. when light vibrates in one direction
- 14. light has this kind of nature
- 16. when light bounces off of particles in a medium in different directions
- 21. the kind of lens that bends light rays away from each other
- 23. light travels slowest in this medium
- 25. the speed of light is not dependent on this
- 29. patrially see through
- 33. the kind of interference when a wave crest overlaps with a wave trough