....by 3mm a year
http://news.bbc.co.uk/1/low/sci/tech/6231334.stm
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http://news.bbc.co.uk/1/low/sci/tech/6231334.stm
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Is london Sinking or is the sea rising ??Originally posted by andyThats the way the cookie crumbles -
No, the GPS satellites are moving 3mm away from the earth every year."A people that elect corrupt politicians, imposters, thieves and traitors are not victims, but accomplices," George OrwellComment
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Then the sea would be sinking 3mm as well (unless it's rising).Originally posted by PaddyComment
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Possible Sources of Error in Measuring Positions:Originally posted by Old Greg
�� Clock: Although the atomic clocks in GPS satellites are extremely precise, they are not
perfect.
�� Atmospheric: The ionosphere (the atmospheric layer 30-50 km above Earth’s surface)
contains particles with electrical charges, which change the speed of radio
signals. Water vapor in the troposphere (the atmospheric layer in which weather
occurs) may decrease the speed of radio signals.
�� Multipath: When radio signals bounce off objects such as buildings and trees instead of
traveling directly from the satellite to the receiver, the signal takes longer to
reach the receiver than it should.
�� Ephemeris (orbital): The moon and sun’s gravitational pulls influence the orbit of GPS
satellites."A people that elect corrupt politicians, imposters, thieves and traitors are not victims, but accomplices," George OrwellComment
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You win.Originally posted by Paddy
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Bother, and I was only messing about.Originally posted by Old GregYou win."A people that elect corrupt politicians, imposters, thieves and traitors are not victims, but accomplices," George OrwellComment
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Londoners are getting fatter? Is Cornwall rising by any chance?Science isn't about why, it's about why not. You ask: why is so much of our science dangerous? I say: why not marry safe science if you love it so much. In fact, why not invent a special safety door that won't hit you in the butt on the way out, because you are fired. - Cave JohnsonComment
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Not really fast enough is it?Originally posted by andy
+50 Xeno Geek Points
Come back Toolpusher, scotspine, Voodooflux.Pogle
As for the rest of you - DILLIGAF
Purveyor of fine quality smut since 2005
CUK Olympic University Challenge Champions 2010/2012
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It’s all those dam foreigners.
Never mind, when I go it will balance out a bit.Drivel is my specialityComment
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