Physics

• The search for a steady beat

  Every clock is something that repeats at a steady pace, plus a way to count the repeats. The rest of the story is the hunt for something steadier.

  • 9min read
  • 10min listen
  • 31questions
• Ibn al-Haytham

  Lamps in a dark room, a tube on a ruler and a book of doubts — how one scholar rebuilt the science of sight.

  • 8min read
  • 25questions
• Electricity

  The doorknob zap and the lightning bolt are the same event at different sizes — meet the charge that runs the world.

  • 9min read
  • 11min listen
  • 31questions