Optical Clocks and Relativity

被引：625

作者：

Chou, C. W. ^{[1
]}

Hume, D. B. ^{[1
]}

Rosenband, T. ^{[1
]}

Wineland, D. J. ^{[1
]}

机构：

[1] NIST, Div Time & Frequency, Boulder, CO 80305 USA

来源：

SCIENCE | 2010年 / 329卷 / 5999期

关键词：

ATOMIC CLOCKS; FREQUENCY STANDARDS; SPECTROSCOPY; SPACE; LINK;

D O I：

10.1126/science.1192720

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Observers in relative motion or at different gravitational potentials measure disparate clock rates. These predictions of relativity have previously been observed with atomic clocks at high velocities and with large changes in elevation. We observed time dilation from relative speeds of less than 10 meters per second by comparing two optical atomic clocks connected by a 75-meter length of optical fiber. We can now also detect time dilation due to a change in height near Earth's surface of less than 1 meter. This technique may be extended to the field of geodesy, with applications in geophysics and hydrology as well as in space-based tests of fundamental physics.

引用

页码：1630 / 1633

页数：5

共 33 条

[1]

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