Monday 9 September 2013

The time signal

We walked across the salt marsh from Silloth to Abbeytown and had great views of Anthorn aerials. They show up well from our back garden too, but are much more distant. One of the things that they do is to broadcast the national time signal using measurements from the National Physical Laboratory, the UK's temple of measurement. 200 years ago, each town in the UK had its own time, set by local midday, when the Sun is highest in the sky. Carlisle was 8 minutes behind London if I remember rightly. This was no good for the railways, so time needed standardising across the country. This could be done by telegraph. Anthorn is now the chosen vehicle of communication. It is vital that places in the UK have standardised time for transport timetables but also for timed financial transactions.
 
Here's my picture of the aerials. Not the storm brewing. We had to shelter under a gorse bush.