[time-nuts] Using borked Galileo sats to measure relativity
Brian.Inglis at SystematicSw.ab.ca
Tue Nov 10 02:26:00 EST 2015
On 2015-11-09 22:14, Mark Sims wrote:
> Now, for 140E-6 bonus points, spot the error in the article...
The Reg claims "clock 10,000 kilometers up ran 140 parts in a million of a second faster than the same device on Earth" but the original article actually states "confirming [Einstein's] prediction to within 140 parts in a million" and "will go on to test Einstein’s theory down to 2–3 parts per million."
However the original article also says
"clocks...run faster in orbit than on the ground – a few tenths of a microsecond per day"
which should be about 40us/day ~ 0.4ppb for Galileo if the graph is correct in article:
and seems more reasonable given TVB's project GREAT results of ~ 20ns.
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada
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