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Old Fri Jul 24, 2009, 05:45pm
Mark T. DeNucci, Sr. Mark T. DeNucci, Sr. is offline
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Join Date: Sep 1999
Location: Toledo, Ohio, U.S.A.
Posts: 8,252
Quote:
Originally Posted by mbyron View Post
1. Prior to the development of chronometers capable of measuring microseconds, the sidereal second was sufficiently precise.

2. It matches a sidereal second pretty closely. If you're asking why cesium 133, I don't know the answer to that one. Sorry!


MBryon:

You are my kind of guy: from NE Ohio; .

MTD, Sr.

Youngstown (Ohio) Liberty H.S., Class of 1969
Youngstown State Univ., Bach. of Civil Engr., Class of 1980
Trumbull Co. Bkb. Off. Assn., Member since 1971.
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Mark T. DeNucci, Sr.

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