来自MSN14 天
China builds ‘impossible’ fridge-sized atomic clock for precise military operations
A team of Chinese researchers has reportedly developed the most precise portable atomic clock ever. Small and rigid by design ...
朝日新聞社4 年
Time proven to pass faster atop Tokyo Skytree than on ground
Four nanoseconds faster per day to be exact, quantum electronics ... clock is more than 100 times that of cesium atomic clocks currently used for time definition. Katori called the Skytree finding ...