About a decade ago, physicists put forward a theory that proposes how to investigate the quantum nature of time. It can be possible for clocks to experience superposition, where two different states exist at the same time.

Add Yahoo as a preferred source to see more of our stories on Google. On a late morning in early November, 72-year-old Jim Gramlich stood on a ladder inside the downtown Pensacola clock tower at Palafox and Government, brushing hunter green paint onto the ...

Few concepts in physics are as familiar, yet as enigmatic, as time. In Einstein's theory of relativity, time is not absolute: its passage depends on motion and gravity. But when combined with quantum physics,