[LEAPSECS] Nit-pick: SI second

Warner Losh imp at bsdimp.com
Mon Feb 7 16:39:10 EST 2011

On 02/07/2011 12:10, Tom Van Baak wrote:

>> It is also why TAI's rate was adjusted in the 1990's to compensate

>> for the red-shifted data that had been collected at NIST in Boulder,

>> since it sits at about 5400' (1700m) above sea level (as well as

>> other facilities not at sea level).


>> Warner


> Are you sure you aren't confusing red shift (which has been

> a known factor since the 60's) with blackbody shift (which

> only arose in the 90's as clocks hit the 1e-15 level)?

I may well be confused between the two...


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