On Mon, 7 Feb 2011, Hal Murray wrote: > > Doesn't it depend upon gravity (aka sea level)? Is that standardized?
Yes. The SI second is defined independent of any reference frame. The TAI second is the SI second as realised on the geoid. There are other timescales that are based on SI seconds in particular reference frames, most notably TCG and TCB. Tony. -- f.anthony.n.finch <d...@dotat.at> http://dotat.at/ HUMBER THAMES DOVER WIGHT PORTLAND: NORTH BACKING WEST OR NORTHWEST, 5 TO 7, DECREASING 4 OR 5, OCCASIONALLY 6 LATER IN HUMBER AND THAMES. MODERATE OR ROUGH. RAIN THEN FAIR. GOOD. _______________________________________________ LEAPSECS mailing list LEAPSECS@leapsecond.com http://six.pairlist.net/mailman/listinfo/leapsecs
