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Smartphone keys get quantum trick - A quantum physics trick is set to give smartphones and hand-held devices pressure-sensitive switches and touchscreens.
Shuttle makes final night flight - The US space agency (Nasa) has launched its shuttle Endeavour on a mission to the International Space Station (ISS).
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Dynamic Pluto revealed in images - Images from the Hubble Space Telescope reveal that the icy dwarf planet Pluto undergoes dramatic seasonal changes.
Climate scepticism 'on the rise' - The British public has become increasingly sceptical about climate change, a poll for BBC News suggests.
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GPS FAQ

What is the Global Positioning System?

The Global Positioning System (GPS) is a constellation of U.S. Government Satellites providing the most advanced and accurate positioning and navigation service in the world. Equipped with atomic clocks, twenty-four GPS satellites orbit 12,000 miles above the earth transmitting the exact time and their position in space.

What is a GPS receiver?

A GPS receiver is an electronic device that listens to satellite signals and uses the information to determine and display the receiver's location, speed, altitude and heading.

What is a GPS waypoint?

A GPS waypoint is a navigational fix on a point of reference. The GPS waypoint is oftentimes provided as a set of longitude and latitude coordinates in the "degree, minute, second" format.

What is a WGS 84?

WGS 84 is the acronym that represents the words, "World Geodetic Survey 1984". WGS 84 is one of the most widely accepted datums.

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