Handed down generations through oral traditions and first written down on palm leaves between the 2nd and 12th century AD, the Puranic system of time units is at least 2,000 years old, say scholars.

Scientists have measured the shortest unit of time ever: the time it takes a light ... The results were detailed Oct. 16 in the journal Science. Editor's note: This story was updated to correct ...

In the abstract world of mathematical theory, Live Science reports the absolute smallest unit of time could be yet another 100 billion times shorter. The best atomic clocks can measure down to a ...

Scientific units are set to receive their biggest shake ... on to measure the temperature in the Large Hadron Collider any time soon). You may be in need of a refresher, then.

Therefore, the standard unit of time, based on astronomical reckoning ... as they discovered just how irregular Earth’s spin was. Science demands constancy, reliability and replicability.

at any place or time and on any scale, without losing accuracy. For measurements on conventional scales, existing definitions of SI units suffice. But they are poor tools for modern science at the ...

For if the entire amount of motion imparted and received be uniform during a period of time, the motion imparted during a unit of that ... The language of scientific discussion should be cleared ...

THE kilogram, the scientific unit of mass, is defined by a cylindrical ... When these copies are compared, however, as they are from time to time, it is apparent that they are changing weight ...