What is considered high vacuum?

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Tags

1. #regime
2. #ultra
3. #lower
4. #pressures
5. #pipes
6. #reason
7. #collider
8. #large
9. #pumping
10. #nanopascals
11. #conditions
12. #created
13. #pascal
14. #chamber
15. #particle
16. #hadron
17. #accelerators
18. #about
19. #vacuum
20. #characterised