资讯

Live Science on MSN2 天
Physicists create groundbreaking atomic clock that's off by less than 1 second every 100 ...
The National Institute of Standards and Technology's new cesium fountain clock is one of the most precise atomic clocks ever ...
Discover Magazine on MSN10 天
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.
Hackaday2 天
world clock
The Geochron World Time Indicator is a clock that doubles as a live map of where the sun is shining on the Earth. Back in its day, it was a cult piece that some have dubbed the “Rolex on the ...
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 ...
Medscape1 天
Keep Clocks on Permanent Standard Time, Says Canadian Group
The policy of turning clocks forward by an hour in the spring causes “discrepancies between the circadian biological clock ...
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 ...