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Barbara Stefanics

How does your smartphone know your location? - Wilton L. Virgo | TED-Ed - 0 views

ed.ted.com/...w-your-location-wilton-l-virgo

TED-ed_Club TED-ed_lesson 3.5_per_public_com 1.3_privacy_anonymity

shared by Barbara Stefanics on 01 Feb 15 - No Cached
  • Barbara Stefanics on 01 Feb 15
     
    "GPS location apps on a smartphone can be very handy when mapping a travel route or finding nearby events. But how does your smartphone know where you are? Wilton L. Virgo explains how the answer lies 12,000 miles over your head, in an orbiting satellite that keeps time to the beat of an atomic clock powered by quantum mechanics. "
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