7art-ScreenSavers.com/clock-scr/max

 


 

Advertisements:

Freeware Programs: 7art-ScreenSavers.com/clock-scr/max
 
Download Atomic Clock ScreenSaver 2.9

Atomic Clock ScreenSaver 2.9  The first accurate atomic clock was built in 1955. Since when the second being based on atomic time and defined as the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two levels of the caesium atom.