Across
- 3. a total shadow, darkest possible shadow
- 6. Light moves fastest in one of these
- 12. a partial shadow
- 13. The length of a wave; depends on its frequency
- 15. "two eyes"
- 17. The type of image formed by your eye's lens
- 20. Symbol = n
- 23. Objects that do not let any light through them
- 24. Electromagnetic Spectrum, abbreviated
- 25. Lets light through, but is not see-through
- 27. Reflection off of rough or uneven surfaces
- 28. Area of the eye that forms an image
- 30. Longer wavelength EM radiation detectable by cameras
- 32. Dutch scientist who examined light as a wave
- 35. Type of medium that refracts light rays toward the normal
- 36. The only type of image possible in concave mirrors
Down
- 1. Greek letter used as an abbreviation for 'angle'
- 2. opposite of crest
- 4. Angle of incidence always equals this
- 5. The height of a wave; depends on its energy
- 7. Lens type that mainly forms real images, rarely virtual
- 8. Form of short wavelength EM radiation not visible to us
- 9. Point of contact between principal axis & mirror surface
- 10. A name for all of the colours found in white light
- 11. Point located exactly one Focal Length away
- 14. English author of "Opticks" and "Principia"
- 16. Growing apart
- 17. Bending of light rays
- 18. A unit of light energy
- 19. Coming together
- 21. A word meaning "mirror-like", describes reflection
- 22. How many waves form in a second
- 26. An incoming ray of light
- 28. Always use one of these to draw ray diagrams
- 29. Condition of being nearsighted
- 31. Particle of light, proven to exist by Einstein
- 33. Improved the telescope
- 34. Every Science teacher's favourite food condiment