Tim Urban

@waitbutwhy ↗

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Last Checked Aug. 18, 2022

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Sun Jan 16 21:55:56 +0000 2022

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Tim Urban @waitbutwhy

@__Andyland__ Correct - if phones had atomic clocks like the satellites do, you'd only need three. — PolitiTweet.org

Posted Jan. 16, 2022

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Tim Urban @waitbutwhy

GPS, a US DoD project that went live in 1995, is a constellation of 27 satellites. Typically, between 5 and 10 of t… https://t.co/6PBYCk4CDg — PolitiTweet.org

Posted Jan. 16, 2022

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Tim Urban @waitbutwhy

Your phone uses the lag time b/w when a satellite sends out a signal & your phone receives it to calculate your dis… https://t.co/JMyZlJmxJf — PolitiTweet.org

Posted Jan. 16, 2022