2005 is the 100th anniversary of Einstein's first set of famous papers, including the one on relativity. This has received a fair amount of press this year.
Less well known is that 2005 is also considered the 50th anniversary of the atomic clock. Here is a collection of papers and links if you're short of summer reading material: 50th Anniversary of the First Accurate Cesium Atomic Clock (Symmetricom PR) http://www.imakenews.com/eletra/mod_print_view.cfm?this_id=432361&u=symmttm Louis Essen - Famous for a Second by his son, Ray Essen http://www.btinternet.com/~time.lord/ History of Atomic Frequency Standards- A Trip Through 20th Century Physics by Arthur O. McCoubrey http://www.ieee-uffc.org/fcmain.asp?page=mccoubrey http://www.leapsecond.com/history/ Time Scales (the original 1968 Metrologia article where Louis Essen documents the difficulties coordinating astronomical time and atomic time) Einstein Year 2005 - Celebrating Time http://www.npl.co.uk/einstein_year/ Science Museum | Atomic clocks | Louis Essen http://www.sciencemuseum.org.uk/on-line/atomclocks/page1.asp Frequency of Cesium in Terms of Ephemeris Time by W. Markowitz and R. Glenn Hall, USNO by L. Essen and J. V. L. Parry, NPL http://prola.aps.org/abstract/PRL/v1/i3/p105_1 Fifty years of atomic clocks http://physicsweb.org/articles/world/18/5/2/1 Metromnia Issue 18 - Spring 2005 - Einstein http://www.npl.co.uk/publications/metromnia/issue18/ The History of Frequency Control and Modern Time Keeping compiled by John Vig http://www.ieee-uffc.org/fcmain.asp?view=history SPECIAL ISSUE: FIFTY YEARS OF ATOMIC TIME-KEEPING: 1955 TO 2005 Metrologia, Volume 42, Number 3, June 2005 http://www.iop.org/EJ/news/-topic=945/ http://www.iop.org/EJ/toc/0026-1394/42/3 includes: - History of early atomic clocks, Norman Ramsey - Essen and the National Physical Laboratory's atomic clock - Atomic time-keeping from 1955 to the present - Fifty years of atomic time-keeping at VNIIFTRI - Fifty years of commercial caesium clocks, Leonard Cutler - and more (some of the above links may require IEEE/UFFC or IOP registration) /tvb http://www.LeapSecond.com _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
