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Virtual Art
OLEKSTOCK/SHUTTERSTOCK.COM (PHONE); COURTESY OF APPLE (ARTWORK)
UNREAL SCULPTURE: A creation by artist Nick Cave appears on top of a building in New York.
People in New York City, London, and Tokyo have a new way to experience works of art—using an app on their smartphones. The tech company Apple is using augmented reality (AR) to exhibit digital artworks in these and other cities around the world. When people look through their phones’ cameras, the technology shows images of artists’ creations overlaid on their surroundings.
To experience the AR artworks, people register for an [AR]T Walk at an Apple store. A tour guide then leads them on a hunt for the virtual installations around the neighborhood. The app uses a phone’s built-in global positioning system (GPS) to track the user’s location. When viewers stand in a particular spot, the art appears on their screens. The tour is just one example of how AR can enhance real-life experiences, says Robert Konrad, a Ph.D. candidate who studies AR at Stanford University in California.
The global positioning system (GPS) uses a group of satellites more than 20,000 km (12,400 mi) above Earth. They relay signals to your phone that allow AR apps to determine your location.
ILLUSTRATION BY PETER SUCHESKI
Satellites emit radio signals containing information about their location at a precise time.
These signals travel through space at the speed of light, about 299,792 km (186,282 mi) per second.
On Earth, your GPS device receives this information from at least four satellites and calculates its distance from each.
Those measurements help the device determine your location.
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