Science Explained: How does sat-nav work?


How does sat-nav work?

Professor Cathryn Mitchell from the University of Bath explains as she finds herself navigating around London.


That was quite interesting.


Bloody good . . . explanation that is!

I especially enjoyed her comment near the end that a fourth sat signal helps to overcome the "cheap clock" built into most hand-held gps. That ia a good little video to show the kids when they ask how gps works! Gotta love the BBC.

Winston Churchill said, “Americans can always be counted on to do the right thing, after exhausting all other possibilities.”