Google Earth
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What is it?

Google Earth is perhaps the most well-known example of a mirror world.

The program is based on 3D maps, which possess the capability to show 3D buildings and structures (such as bridges). The 3D maps used by Google Earth have been created using Sketchup, a 3D modeling program software, and submitted by users. Google Earth is available to the public and can be used for everything ranging from finding directions to scanning the ocean floor.


How Does it Work?

  • Maps the Earth by the superimposition of images obtained from satellite imagery, aerial photography and GIS 3D globe
  • Users can submit 3D maps created using a 3D modeling software program called Sketchup
  • Google Earth uses digital elevation model (DEM) data collected by NASA's Shuttle Radar Topography Mission to view the whole Earth in 3D
  • Can show many different images overlaid on the surface of the Earth

How is it used?

  • View areas subjected to widespread disasters
  • Teaching students geographical themes (location, culture, characteristics, human interaction, and movement)
  • Exploring and placing location bookmarks on the Moon and Mars
  • Getting directions
  • Hub of knowledge, pertaining the users location (viewing local gas stations, restaurants, museums etc)
  • Creating custom image overlays for planning trips, hikes on handheld GPS units
  • Mapping homes and selecting a random sample for research in developing countries
  • Flight simulator
  • Scanning the ocean floor

Visit Google Earth now!
//www.google.com/earth/