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Tag archives: metrology

Celebrating Louis Essen and the birth of atomic time

Peter Knight (left) and John Dudley unveiling the historical plaque

Peter Knight (left) and John Dudley unveiling the historic plaque.

By Hamish Johnston

On Friday I braved the torrential rains that have been soaking southern England to make the journey from Bristol to Teddington, which is the birthplace of the atomic clock. Situated in the leafy suburbs west of London on the swollen banks of the River Thames, Teddington is the home of the National Physical Laboratory (NPL), which is the UK’s standards and metrology lab.


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