Global Positioning System Reference
In-Depth Information
technologies work together to make gps perform in a way that would appear
magical to prior generations. It is difficult to decide which one is most essen-
tial. But at the core of the system beat the “radio frequencies at the hearts of
atoms”—the atomic clocks—so it seems especially fitting that the gps constel-
lation of satellites surrounding Earth resembles electrons orbiting an atom.
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