The science of time

This weekend Europe has adapted its time to spring and summer. Up to the coming of railways, people kept the time using the sun.This was known as local mean time. It was in 1880 that the GMT (Greenwich Mean Time) was adopted across the UK. In San Sebastian our local time is GMT+1.

Time zones sometimes seem positively eccentric, affected by political, geographical and social changes in the real world. But as irregular as they are, if you want to divide the world up into time zones, you need a way to measure time.

Do you know how TIME is measured? Watch this video to find out.......

http://www.bbc.co.uk/news/science-environment-12787502