Did you know your phone's GPS depends on Einstein's theory of relativity? GPS … · @distance9909 · TwKit

@distance9909

Did you know your phone's GPS depends on Einstein's theory of relativity? GPS satellite clocks run about 38 microseconds faster per day than clocks on Earth. Without correcting for relativity, navigation errors would quickly grow. Your phone literally needs Einstein to know where you are. 📍

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