Tech WondersPlay

Zone 6

Silicon Dunes

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

  • Mind & Perception
  • Space, GPS & Maps
  • Mind-Bending Math & Games
  • The Internet & Web
  • Security & Scams
  • Codes, Cryptography & Blockchain
  • Inside the Computer
  • Quantum & Relativity
  • Energy, Heat & Motion
Play this zone
  1. 46Digital PsychologyPhantom VibrationsMost phone users have felt a buzz that never happened
  2. 47AstronomyWhy We Only See One Side of the MoonThe Moon spins exactly once per orbit
  3. 48CombinatoricsThe Pigeonhole TrickToo many pigeons for the holes guarantees a hidden match
  4. 49Online PrivacyIncognito Isn't InvisiblePrivate mode hides your history from your phone, not from the internet
  5. 50Online SafetyThe QR Sticker ScamA fake code taped over the parking meter sends your card to a thief
  6. 51Cryptographic HashingChange One Letter, Change EverythingA hash is a fingerprint that flips totally at the smallest change
  7. 52BinaryEverything Is BinarySongs, photos and this sentence are all just ons and offs
  8. 53Atomic PhysicsAtoms Are Mostly EmptyIf an atom were a stadium, the nucleus would be a marble
  9. 54Thermal EngineeringYour Fridge Doesn't Make ColdIt pumps heat out of the box and dumps it into your kitchen