Reels about Technology
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Technology
The internet travels as pulses of light
Fibre optic cables carry data as laser light bouncing inside glass thinner than a hair, moving at roughly two-thirds the speed of light in vacuum.
Technology
Almost all international data crosses the seabed
Satellites carry a tiny share — around 99% of intercontinental internet traffic runs through submarine cables, some no thicker than a garden hose.
Technology
GPS would fail without Einstein
Satellite clocks tick faster in weaker gravity and slower from speed. Without relativity corrections of about 38 microseconds a day, positions would drift kilometres off.