Re: Leaping clocks


on UK.MOD.RSRE (LAWS%rsre.mod.uk@NSS.Cs.Ucl.AC.UK)
Fri, 1 Jan 88 20:20


Dave,

One hour after sending my 'Empire time' msg (Stars Wars is showing on
the TV at this moment) I heard on the 'news' that Paris and not London
pushed the leap button. I'll console myself with the knowledge that we
are both part of the ECC. Years ago I worked at the National Physical
Laboratory Teddington and I thought the atomic clock there had some
national role.

Missing has been the education of why we have leap seconds. I assume
they are always positive and are because of either or both - the Earth
does not rotate at a smooth constant rate year by year, the rotation is
slowing down (and the Moon moving further away).

John



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