Tech WondersPlay

Zone 15

Satellite Belt

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

  • Mind & Perception×2
  • Mind-Bending Math & Games×2
  • Space, GPS & Maps×2
  • The Internet & Web
  • Engineering & Machines
  • Data & Probability
Play this zone
  1. 127Auditory PerceptionYanny or Laurel?One recording, two words, and people hear different ones
  2. 128Unsolved ProblemsThe Simplest Unsolved ProblemHalve if even, triple and add one if odd; does it always reach 1?
  3. 129Internet HistoryThe First YouTube VideoNineteen seconds at a zoo started it all
  4. 130BiomimicryThe Train That Copied a BirdJapan's bullet train borrowed its nose from a kingfisher
  5. 131StatisticsWhat ‘70% Chance of Rain’ MeansIt isn't 70% of the day or 70% of the city
  6. 132PerceptionYour Brain Hides Your NoseYour nose is always in view, yet you never see it
  7. 133Precision MeasurementThe Atomic ClockThe most precise clocks count the vibrations inside atoms
  8. 134Satellite NavigationHow GPS Finds YouYour phone listens to satellites' clocks and does the math
  9. 135Mathematics in NatureSunflowers Count in FibonacciSeed spirals come in 34s, 55s and 89s