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Science, Maths & Technology
Understanding science: what we cannot know
...Système international), was chosen to match the duration of the astronomical second as measured by atomic clocks in 1958. Since 1972, a time scale derived from TAI, known as Coordinated Universal Time (UTC), has become the basis for all civil and scientific timekeeping. UTC attempts to keep in step with the rotation of the Earth by introducing an occasional ‘leap’...