[LEAPSECS] Atomic time: 60 years of the ultra-precise atomic clock

[Richard B. Langley]

http://eandt.theiet.org/magazine/2015/05/60-years-of-atomic-time.cfm

-----------------------------------------------------------------------------
| Richard B. Langley                            E-mail: lang at unb.ca         |
| Geodetic Research Laboratory                  Web: http://gge.unb.ca/     |
| Dept. of Geodesy and Geomatics Engineering    Phone:    +1 506 453-5142   |
| University of New Brunswick                   Fax:      +1 506 453-4943   |
| Fredericton, N.B., Canada  E3B 5A3                                        |
|        Fredericton?  Where's that?  See: http://www.fredericton.ca/       |
-----------------------------------------------------------------------------