gps

gps gps or Global Positioning System is the new way to find the right way.
From other points in the universe, we can determinate our position on the map. The oceans became known territory after we learned to use the stars and an accurate clock to find the other site of the ocean. But this was not an ease job.
Satellites sent a signal. A computer receives that signal and calculates our position. This is gps. Give that computer a map and gps will tell the place on the map where you are. Ad some software to gps and the computer can speak to you and guide you trough the streets of a city. The links below show you what is possible and available with global positioning systems.
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Peter H. Dana, The Geographer's Craft Project, Department of Geography, The University of Colorado at Boulder about gps
Macintosh gps program


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