What's the sharpest thing in the world?

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Tags

1. #electric
2. #needle
3. #strong
4. #tungsten
5. #microscope
6. #field
7. #exposing
8. #tapers
9. #device
10. #narrow
11. #object
12. #placing
13. #thickness
14. #atmosphere
15. #single
16. #called
17. #nitrogen
18. #manufactured
19. #sharpest