Through Copenhagen’s ornate Town Hall trooped a steady stream of sightseers last week to look at the workings of the world’s most complex astronomical clock. Set in motion shortly before ...

This challenges and disproves the commonly held notion that circadian rhythms were strictly organized in a hierarchical manner, and that light resets the master clock in the SCN, which then ...

The idea that a mechanical master/slave clock/wristwatch could be built intrigued the founders of Urwerk, who are masters at high technology mechanical wristwatches. In fact, the brand was the ...

By comparing DSAC with the U.S. Naval Observatory’s hydrogen maser “master clock” on the ground, the researchers found that the space clock drifted about 26 picoseconds, or trillionths of a ...