Cecil Moore wrote in news:SIxuh.76115$wP1.56143
@newssvr14.news.prodigy.net:

Dave Oldridge wrote:
There are other entropic processes that can be calibrated against the
cesium.

Who did that before cesium existed?

Nobody that I know of, but we're getting to the point where we can see
almost that far back.


--
Dave Oldridge+
ICQ 1800667