earth10d
Most accurate optical atomic clock ever made will redefine the meaning of a 'second'
Scientists developed a highly accurate optical ion clock, improving time measurement precision by 1,000 times.
Redefining the second: Optical atomic clock achieves record accuracy in comparison measurement
The next generation of atomic clocks "ticks" with the frequency of a laser. This is about 100,000 times faster than the ...
The Doomsday Clock reveals how close humanity may be to total annihilation
Seventy-eight years ago, scientists created a unique sort of timepiece — named the Doomsday Clock — as a symbolic attempt to ...
WXII 12 NEWS2d
The Doomsday Clock reveals how close humanity may be to total annihilation
"How accurate is the clock?Though the clock can't measure threats ... On Tuesday, the clock was set at 89 seconds to midnight — the closest the world has ever been to that marker, according ...