- NICT is the first in the world to generate national standard time by reference to an optical clock. - By adding an optical lattice clock to the time system, time is kept within five billionth of a ...

An experimental atomic clock based on a single mercury atom is now at least five times more precise than the national standard clock based on a "fountain" of cesium atoms, according to a paper by ...

PROVIDENCE, R.I. (WJAR) — Like it or not, but standard time returns this weekend. Clocks will "fall back" at 2 a.m. Sunday with the end of daylight saving time. Standard time in the United States will ...