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World 7 · Nano World: When Size Changes Everything · 9 min · PRO

From a hair to an atom

Finding the nanoscale

PRO · Materials Testing Lab

World 7: Nano World: When Size Changes Everything is part of PRO

The first world of Materials Testing Lab is free. PRO opens the other 25 lessons in 6 worlds — simulations, quizzes and all.

  • Surface versus volume
  • The gecko foot
  • The lotus effect
  • Gold that is red
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