R22 LECTURE THEATRE @ 15:00
Doctor Rachel Godun
National Physical Laboratory
Optical atomic clocks for more than just telling the time
For thousands of years, man used the rotation of the Earth as a reference for timekeeping. But the modern world requires far greater precision and the advent of atomic clocks has enabled fractional uncertainties in the realisation of the second to improve by many orders of magnitude. With ever improved accuracy in measurements of time and frequency, it also becomes possible to test fundamental physics at previously inscrutable levels. This talk shows how atomic clocks at the National Physical Laboratory can be put to use as sensors of gravity potential or even to measure limits on possible time-variation of fundamental constants.
Coffee, tea and biscuits at 14:30 in R22