Cesium Atomic Clocks

 

                                                                          Cesium

Uses Of Cesium

Cesium Atomic Clock

First cesium clock: Built in 1955 by Louis Essen and Jack Parry at the UK's National Physical Laboratory.  Adopted as the international time standard in 1967.

 Accuracy:     Standard cesium clocks: accurate to 1 second in 100 million years.

Applications

• Defines Coordinated Universal Time (UTC)
• GPS satellites: Require atomic time for location precision.
• Telecommunications: Network synchronization.
• Finance: High-frequency trading timestamping.
• Scientific experiments: Quantum physics, relativity tests.

GPS Satellites Need Atomic Time For Location Precision 

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