Quantum & RelativityRelativity
Einstein in Your Pocket
Your phone's map would be wrong by kilometers without relativity
Your phone finds you using clocks in space. What would happen to your map if nobody had listened to Einstein?
You'll find out
- What speed does to a satellite's clock
- What gravity does to it
- How engineers fixed it before launch
Why it matters
Every map, ride and delivery app leans on GPS, and GPS leans on relativity every second.
Play this lesson
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