› #28 of 30 · Scale
Undersea fiber cable
How the answer can cross an ocean
Comes after #27 Data center
Build the real thing
Buy
Cable cross-section + light-pipe demo
Get a cross-section sample of undersea cable, then shine a bright flashlight into a clear acrylic rod or a thin stream of water. The light stays trapped inside and follows the path, the way it travels through glass fiber under the ocean.
- Cost
- $ · Under $25
- Time
- One session
- Screens
- No screen needed
For the grown-up
If you swap the flashlight for a laser pointer, a grown-up holds it and it never points at anyone's eyes.
Build it in bricks
Brick build comingPalm-size
Step-by-step brick booklets land one model at a time, starting with the Starter Five.
The AI ideas it connects to
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