Details

Title

NPL cesium atomic clock

Authors

NPL

Date of Issue

1955-05

Linked Datasets

Jack Parry and Louis Essen with the first NPL cesium clock  

Photo of NPL cesium clock  

Photo of NPL cesium clock, front  

Photo of NPL cesium atomic clock, back  

Photo of NPL cesium atomic clock, top  

Video BBC of NPL cesium clock  

Video NPL of NPL cesium clock  

Photo of the NPL cesium beam in the lab  

Device Type

clock

Operating Principle

beam

Reference Species

cesium

Quantum Transition

hyperfine

Reference Frequency

9 192 631 830 (10) Hz

Fabrication Source

noncommercial

Host Institution

NPL

Status Timeline

Unveiled: 1955-05

Current Location

Science Museum, London | https://collection.sciencemuseumgroup.org.uk/objects/co855/caesium-atomic-clock-1955

Product

essen1955

Identifiers

https://libra.unine.ch/handle/20.500.14713/100494