Back in Time

Monday Moments

How long is a moment? Perhaps as long as the BBC time pips which are celebrating their centenary this very day.

Originally they would have helped people set their watches and clocks to the exact time, now our phones, radios and many of our clocks are connected by magic to the beating heart of the universe. Though some say the National Physical Laboratory is responsible.

The pips for national radio stations are timed from an atomic clock  in the basement of BBC Broadcasting House synchronised with the National Physical Laboratory.

 There are six pips which occur on each of the 5 seconds leading up to the hour and on the hour itself. The first five last a tenth of a second each, while the final pip lasts half a second. The actual moment when the hour changes is at the very beginning of the last pip. I checked the clock on my radio and sure enough the clock changed to the hour exactly on the last pip. Looking up more facts surrounding our precious pips and how the whole world keeps time can lead you down a rabbit hole, perhaps you will even meet Alice in Wonderland’s White Rabbit with his pocket watch. But do we still need the pips?  Yes, they are a precious few moments when broadcasters actually stop talking, a moment of peace before we are weighed down by the latest round of news.

https://www.bbc.com/historyofthebbc/anniversaries/february/the-pips