September 24th, 2014
Episode 29 of 647 episodes
The atomic clock runs on caesium, and has redefined the very meaning of time. But it has also introduced a bug into timekeeping that affects everything from computerised financial markets to electricity grids, to satellite navigation, to the Greenwich Meridian. Justin Rowlatt travels to the birthplace of modern time, the National Physical Laboratory in Teddington, England, to speak to Krzysztof Szymaniec, the keeper of the 'Caesium Fountain', and Leon Lobo, the man charged with disseminating time to the UK. He also hears from Felicitas Arias, director of Time at the Bureau International des Poids et Mesures in Paris, about plans to abolish the “leap second”. And the Astronomer Royal, Martin Rees, explains why even the atomic clock can never hope to provide an absolute measure of time.
From finding awe in Hubble images to visiting the doctor, science is everywhere in our lives. Whether we wear a white lab coat or haven't seen a test tube since eighth grade, science affects and changes us. We all have a story about science, and at The Story Collider, we want to hear those stories.