Across
- 2. low intensity along a nodal line
- 5. splitting up of light into colours
- 8. image is larger than the object
- 10. image cannot be projected on a screen
- 13. waves which displace at 90 degrees to propagation
- 14. rays angled apart
- 15. image is upside down
- 16. high intensity along an antinodal line
- 18. rays angled together
Down
- 1. bending of rays when in a new medium
- 3. where two waves meet out of phase
- 4. waves that displace parallel to propagation
- 6. splits up light to make a spectrum
- 7. rays bounce off a surface
- 9. distance between wave crests
- 11. where two waves reinforce in phase
- 12. how many wave cycles per second
- 17. colours of the rainbow