Across
- 5. an opening, hole, or gap
- 6. shift a change in frequency due to the Doppler effect
- 7. image plane of light ray
- 10. see through clear
- 11. a beam of light
- 13. an oval yellowish area
- 14. law relationship between the angles of incidence and refraction
- 15. not able to be seen through
- 16. frequency of a disease
Down
- 1. mirror has a reflecting surface that is recessed inward
- 2. mirror a mirror with a curved reflecting surface
- 3. the white outer layer of the eyeball
- 4. a body or surface of light
- 7. radio waves
- 8. the transparent layer forming the front of the eye
- 9. the action of interfering or the process of being interfered with.
- 12. light, but not detailed shapes