What is the darkest black called?

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Tags

  1. #vantablack
  2. #material
  3. #perpendicular
  4. #substances
  5. #developed
  6. #absorbing
  7. #light
  8. #kingdom
  9. #known
  10. #darkest
  11. #surrey
  12. #nanosystems
  13. #visible
  14. #united