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Old 8th Feb 2009, 12:03
  #42 (permalink)  
Join Date: Mar 2004
Location: Midlands
Posts: 186
Just read in the Times that the caesium clock is about to be replaced by a [email protected] clock which will be accurate to within one second in 1.7 billion years. As a result it will be possible in the future to build "an autopilot accurate enough to land a plane without human intervention"

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