[LEAPSECS] Consensus building 2

[michael.deckers]

    On 2011-02-04 00:32, Stephen Colebourne proposed the following
    description:


> - definition: TAI-2008-second - the same as SI-second for the purposes

> of this discussion

    The TAI time scale uses the SI second alright, but it is the
    value of the SI second as realized on the rotating geoid. You
    get a different time scale if you use the SI second at other
    points in spacetime, such as the geocenter. And if you extend
    TAI from the geoid to other places close to the surface of the
    Earth, using a coordinate system corotating with the Earth, you
    will find that the "TAI second" differs from the SI second as
    realized at these places.

    I fully agree with you that this is irrelevant for leap
    seconds -- but for the definition of TAI it is relevant.

    Michael Deckers.