Scientists: The Earth is Smaller than We Thought

Man of Honour
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Germany: Scientists from the University of Bonn have discovered that the diameter of Earth is actually 5mm smaller than previously believed. The calculation was performed using a technique known as 'Very Long Baseline Interferometry'.

The figure 12,756.274km is more than adequate for most people but scientists require much higher accuracy for measuring things like rising sea levels. VLBI can measure the gap between telescopes with an accuracy of 2mm for every 1,000kms.

"They must be accurate to the millimetre. If the ground stations tracking the satellites are not accurate to the millimetre, then the satellites cannot be accurate either," said research leader Dr Axel Nothnagel.


http://www.news24.com/News24/Technology/News/0,,2-13-1443_2142242,00.html
 
Soldato
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I can't imagine the earth remaining rigid within 5 mil. For some reason I think it must squish and flex at leat 5mil with all the stress it's under, weather, tension from the moon, other bodies, the sun etc.

The world is 5 mil smaller than first suspected. This is a shocking discovery.
 
Permabanned
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R'lyeh
Good news really, 5mm smaller means less mass and therefore less gravitational effect. Which has the benefit of making us all feel a tad lighter.
 
Associate
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DJ XS said:
lol - so this is where all our hard earnt money goes! great!
Yep, all the money you have stored away in your bank account is slowly being siphoned off by ze German scientists to research into the size of the Earth.
 
Man of Honour
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accept, it's only coastal sea depths that have risen, deep sea depths have actually decreased. And if they have got the measurements wrong, then we don't know as the change in depth is around 2.3mm, so an error of 5mm is a lot.

the more accurate the data, the better.
 
Soldato
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AcidHell2 said:
accept, it's only coastal sea depths that have risen, deep sea depths have actually decreased. And if they have got the measurements wrong, then we don't know as the change in depth is around 2.3mm, so an error of 5mm is a lot.

the more accurate the data, the better.

come again, coastal sea depths have risen, but deep sea depths have decreased? Explainavoo, you on about deep sea sedimentation ? Iv got a degree in ocean sciences and iv lost what your on about :D lol
 
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Combat squirrel said:
come again, coastal sea depths have risen, but deep sea depths have decreased? Explainavoo, you on about deep sea sedimentation ? Iv got a degree in ocean sciences and iv lost what your on about :D lol


surface tension, pull from the moon etc. It was in the new scientist a while back. Doesn't mean it's correct but it was very interesting.
 
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