资讯

New atomic fountain clock joins elite group that keeps the world on time
Clocks on Earth are ticking a bit more regularly thanks to NIST-F4, a new atomic clock at the National Institute of Standards ...
Discover Magazine on MSN11 小时
New Atomic Fountain Clock Props Up the World's Time With Pinpoint Precision
F4, the latest cesium fountain clock that now stands as one of the most accurate timekeepers in the entire world.
New Boulder atomic clock submitted to track world’s time
According to scientists at NIST in Boulder, their newest atomic clock, the NIST-F4, will help track time more precisely and ...
Prokerala1 天
Time converter • Calculate time difference between places
By entering the date, time, and location of an event, you can hop on to your little virtual time machine and get a glimpse of the enormous world clock. Whether you're planning a virtual meeting with ...
World’s most accurate clock sold in Japan for US$3.3 million
Resembling a squat, wide fridge, the world’s most accurate clock went on sale for US$3.3 million (HK$25.7 million) in Japan last month. The “Aether clock OC 020” is so precise that it would take 10 ...
Daily Express3 天
The world's biggest clock tower that cost £11bn and makes Big Ben look tiny
The Mecca Clock Royal Tower in Saudi Arabia is the fourth-tallest building and sixth-tallest freestanding structure in the world, as well as the tallest clock tower. It stands at the heart of The ...