Light crossword

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Across
  1. 4. clear
  2. 7. blocks
  3. 8. smaller
  4. 9. glare
  5. 11. particle
  6. 13. blocked
  7. 14. magnify
  8. 16. spread
  9. 18. waves
  10. 19. bounce
  11. 20. mirror
Down
  1. 1. spread
  2. 2. focus
  3. 3. blurry
  4. 5. rainbow
  5. 6. travel
  6. 10. wide view
  7. 12. focus
  8. 15. beam
  9. 17. bend