Lorem ipsum dolor sit amet, consectetuer vitae adipiscing elit. Aenean commodo ligula eget ut, dolor. Aenean massa. Cum sociis pretium qui asem. Nulla consequat massa quis.

Popular Post

Sign up for newsletter
[contact-form-7 id="3" html_class="cf7_custom_style_2"]

How does your smartphone know your location? – Wilton L. Virgo

Wilton L. Virgo | TED-Ed

View full lesson: http://ed.ted.com/lessons/how-does-yo…

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.

Lesson by Wilton L. Virgo, animation by Nick Hilditch.