资讯

Nature22 小时
How to avoid nuclear war in an era of AI and misinformation
Nuclear deterrence is no longer a two-player game, and emerging technologies further threaten the status quo. The result is a ...
Interesting Engineering on MSN2 天
World’s most accurate atomic clock uses 2-mile laser beam to track time precisely
The National Institute of Standards and Technology has set a new world record for the most accurate aluminum ion-based ...
NewsBytes1 天
World's most accurate clock measures time to 19 decimals
The National Institute of Standards and Technology (NIST) has set a new record by developing the world's most accurate clock, ...
Intercontinental optical clock comparison sets stage to redefine the second
In the final analysis, by showing that 10 heterogenous clocks across three continents could agree with each other to within a ...
来自MSN2月
NIST set its new atomic clock in motion, and it’s astoundingly precise
A new atomic clock is one of the world’s best timekeepers, researchers say — and after years of development, the “fountain”-style clock is now in use helping keep official U.S. time. Known ...
Phys.org1月
Two different time scales could increase quantum clock accuracy ...
Redefining the second: Optical atomic clock achieves record accuracy in comparison measurement. Jan 17, 2025 'Tweezer clock' may help tell time more precisely. Dec 23, 2019. Recommended for you.
Daniel Kleppner, Physicist Who Brought Precision to GPS, Dies at 92
He worked to develop an atomic clock that is essential to global positioning systems and helped confirm a rare state of ...