Basic metrology: A matter of time

被引:0
|
作者
Davis, Richard S. [1 ]
机构
[1] NIST, Elect Stand Grp, Gaithersburg, MD 20899 USA
关键词
Clocks; Earth; Global Positioning System; Satellites; Atomic measurements; Level measurement; Sea measurements;
D O I
10.1109/IMM.2019.8868278
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
If measuring devices are extensions of our senses, then increasing measurement accuracy can improve our knowledge of the universe. This month's column is about some of the most accurate measurements knowntime from atomic clocksand how such measurements might be used to measure gravitational features of our Earth in finer detail.
引用
收藏
页码:54 / 56
页数:3
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