Thinker : New Society : Time Change Time Lords
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http://tycho.usno.navy.mil/ used to say, "The Time Service Dept., [of the] U.S. Naval Observatory is the official source of time used in the United States."

What is time? For the scientists, it's a count of some (supposedly) regularly occurring specific phenomenon. See many descriptions and the variances caused by the non-uniformity of physicality.

First written Fri, Jun 6, 1997
Last published Wed, Jun 2, 1999