X-ray discovered

1234567891011121314151617181920
Across
  1. 2. changes, modifications
  2. 3. a scientist who deals with physics
  3. 5. physically injure
  4. 8. strange, unusual
  5. 10. to........scans
  6. 12. .......-free fuel
  7. 16. a handheld device used for waving
  8. 18. in the end
  9. 19. to give out steady light without flame
  10. 20. to.....experiment
Down
  1. 1. a path for a moving or flying object
  2. 4. a large ductless gland in the neck
  3. 6. a ray or shaft of light
  4. 7. to start, to release, to trigger
  5. 9. thrombus
  6. 11. an triangular object hollow inside
  7. 13. a series, an arrangement of things
  8. 14. thick,closely compacted in structure; stupid
  9. 15. to hit by accident while moving
  10. 17. often worn in the kitchen