On 2015-11-09 22:14, Mark Sims wrote:
http://www.theregister.co.uk/2015/11/10/borked_eu_gps_satellites_braincheck_einstein/ 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." http://www.esa.int/Our_Activities/Navigation/Galileo_satellites_set_for_year-long_Einstein_experiment 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: https://en.wikipedia.org/wiki/Time_dilation#Time_dilation_due_to_gravitation_and_motion_together and seems more reasonable given TVB's project GREAT results of ~ 20ns. -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
