People are obsessed with time. Sun movement defined a day and its parts. Seasonal changes and the movements of stars helped to measure seasons. Records of time measurement started way before writing ...

As a species, we are obsessed about time. Our technological exploits rely on an increasingly exact knowledge of time. For example, some communications systems require frequency uncertainty 10-11 ...

Get the latest federal technology news delivered to your inbox. Measurements are, in both direct and indirect ways, a key to our society. They help us agree on a lot of important things that ...