Tech WondersPlay

Zone 13

Retro Terminal

Nine lessons of about three minutes each, every one with a live demo and a quick test.

  • Engineering & Machines×2
  • Space, GPS & Maps
  • Mind-Bending Math & Games
  • The Internet & Web
  • Energy, Heat & Motion
  • Data & Probability
  • Sound, Radio & Information
  • Computing History & Legendary Bugs
Play this zone
  1. 109Planetary ScienceSaturn Would FloatThe giant planet is less dense than water
  2. 110FractalsRandom Dots Draw a TriangleA game of chance draws a perfect fractal
  3. 111Text EncodingEmoji Are Secret SumsA family emoji is several emoji glued together
  4. 112WavesCount the ThunderLightning tells you how far away the storm is
  5. 113Engineering DesignWhy Manholes Are RoundA round cover can never fall into its own hole
  6. 114GeometryThe Drill That Makes Square HolesA rounded triangle can drill an almost square hole
  7. 115ProbabilityWhy Casinos Always WinOver enough bets, a small edge becomes a certainty
  8. 116Music AcousticsWhy Some Notes Sound Good TogetherPleasant chords hide simple ratios
  9. 117Computing HistoryThe First Bug Was a Real MothIn 1947 engineers taped a moth into their logbook