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盖世汽车资讯 on MSN
9 小时
研究人员开发基于片上微梳的光学原子钟技术 推动GPS精度提升千倍
大多数原子钟使用微波频率来诱导原子中的能量振荡。近年来,该领域的研究人员探索了使用激光以光学方式诱导振荡的可能性。就像一把每厘米有大量刻度的尺子一样,光学原子钟可以将一秒分成更多的时间片段,从而使时间和位置指示的精确度提高数千倍。
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今日热点
Grammy winning singer dies
‘Brain tumor has returned’
Daylight saving time 2025
Backs wife for FL governor
Fraud conviction upheld
Joann to close all stores
Foreign leaders visit Ukraine
Lester Holt stepping down
Final North American tour
SAG Awards winners
Blast near Russian Consulate
Russian invasion anniversary
Accused of punching officer
Immigration arrests blocked
‘Phyllis' actor Lawlor dies
To invest $52B+ in AI
To lay off 1,100 workers
ID town hall turns chaotic
Sick sea lions in Malibu
Plans to add 20,000 US jobs
105 years in fatal shooting
MS sheriff’s deputy killed
Trump meets with Macron
On buffer zone challenge
US votes against resolution
2022 parade shooting trial
Announces retirement
Access to data blocked
Launches Ohio governor bid
Bus catches fire, team safe
Won't re-sign Thompson
'Healthy' labels rule delayed
AP access bid rejected
Guardians owner Dolan dies
$16.75M to settle pay probe
Will not seek reelection
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