Originally posted by gingerjedi
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Reply to: London is sinking
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Previously on "London is sinking"
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Originally posted by Old GregIf they're dam foreigners. they'll stop the sea coming in.
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Originally posted by BuffoonIt’s all those dam foreigners.
Never mind, when I go it will balance out a bit.
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Originally posted by BuffoonIt’s all those dam foreigners.
Never mind, when I go it will balance out a bit.
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It’s all those dam foreigners.
Never mind, when I go it will balance out a bit.
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Originally posted by andy....by 3mm a year
http://news.bbc.co.uk/1/low/sci/tech/6231334.stm
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Sasguru has already left
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Originally posted by Old GregYou win.
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Originally posted by PaddyPossible Sources of Error in Measuring Positions:
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.
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Originally posted by Old GregThen the sea would be sinking 3mm as well (unless it's rising).
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.
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Originally posted by PaddyNo, the GPS satellites are moving 3mm away from the earth every year.
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No, the GPS satellites are moving 3mm away from the earth every year.
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Originally posted by andy....by 3mm a year
http://news.bbc.co.uk/1/low/sci/tech/6231334.stm
Get out while you can
Sasguru has already left
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London is sinking
....by 3mm a year
http://news.bbc.co.uk/1/low/sci/tech/6231334.stm
Get out while you can
Sasguru has already leftTags: None
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