The first accurate atomic clock was built in 1955. This led to the internationally agreed definition of the second being based on atomic time.

    Under the International System of Units, the second is currently defined as the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium atom.

    Feel the rhythm of the Universe's symphony with the Atomic Clock screensaver and always know the accurate time!

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• Pentium or higher
• 8 Mb Video Memory
• 10 Mb of free hdd space
• Windows 95/98/ME/2000/XP/2003

• No spyware, no viruses
• Accurate Time
• Original design
• Rotating atom orbits
• Few animated backgrounds
• Bright Positive Colors
• Free desktop Clock
• Cheer your moods!
• Rise your spirits!