Satellite positioning
A phone finds where it is with satellites. Each satellite keeps sending a message saying where it is and what time it is. The message takes a tiny moment to arrive, and from that moment the phone works out how far away each satellite is. Knowing your distance from one place puts you somewhere on a circle; two distances leave two points; three leave just one, and that is where you are. Phones use more than three satellites to be more exact.
Depth 1 · Foundation
You can explain how a phone uses its distances from three satellites to find the one place where it is.
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- 1
Foundation
You can explain how a phone uses its distances from three satellites to find the one place where it is.
Your path here
What's still between you and Satellite positioning, depth 1, in the order you can learn it.
- 1The SunDepth 1 · Foundation · The Solar System
- 2The EarthDepth 1 · Foundation · The Solar System
- 3ForceDepth 1 · Foundation · Mechanics
- 4GravityDepth 1 · Foundation · Mechanics
- 5SatellitesDepth 1 · Foundation · Engineering and technology
- 6Satellite positioningDepth 1 · Foundation · Engineering and technology
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