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How big is infinity? - Dennis Wildfogel

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22,242 Questions Answered

TEDEd Animation

Let’s Begin…

Using the fundamentals of set theory, explore the mind-bending concept of the “infinity of infinities” -- and how it led mathematicians to conclude that math itself contains unanswerable questions.

Which of the numbers below which is irrational?

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Meet The Creators

  • Director Aaron Augenblick
  • Educator Dennis Wildfogel
  • Animator Hal Lee
  • Producer Lisa Thomas
  • Narrator Dennis Wildfogel

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