Physicists in the US have created a highly-stable optical clock that could push the precision of these new timekeepers beyond that of conventional atomic clocks. Optical clocks keep time by using ...

The clock mechanism itself is on the steeple’s second level. On the third level are four bells, named Cecelia, St. John, Marie and Gabriel, which were dedicated in 1924. Another set of weights ...

The tick-tick sound comes from the movement of gears and parts inside the clock. In mechanical clocks, a part called the ...

MR. OVERTON has given us a most useful and interesting volume, describing the gradual evolution of timepieces from the early water clocks, through the balance clock, down to the modern pendulum clocks ...