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Keeping perfect time with caged atoms

Keeping perfect time with caged atoms

Porfyrakis, Kyriakos ORCID: 0000-0003-1364-0261 and Laird, Edward A. (2017) Keeping perfect time with caged atoms. IEEE Spectrum, 54 (12). pp. 34-39. ISSN 0018-9235 (Print), 1939-9340 (Online) (doi:https://doi.org/10.1109/MSPEC.2017.8118481)

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Abstract

For Fridtjof Nansen, 13 April 1895 started well. Six days earlier, the Norwegian explorer had set a new record for the closest approach to the North Pole, and now he was moving quickly over unbroken sea ice toward Cape Fligely and home. But then came a sickening realization: In his eagerness to break camp, he had forgotten to wind the chronometers. He had lost track of precise time, and thus the ability to track his longitude. Although Nansen couldn't have lost his position by more than a few minutes, it forced him to take a circuitously conservative route to avoid being swept into the North Atlantic. His expedition thus had to endure a hungry winter, camped on an unknown shore. Not until June the following year did he encounter other explorers and learn his true position-on Cape Felder, in Franz Josef Land.

Item Type: Article
Uncontrolled Keywords: atomic clocks, oscillators, nitrogen, resonant frequency, atomic beams
Subjects: Q Science > Q Science (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Department of Engineering Science
Last Modified: 15 Oct 2019 11:51
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
URI: http://gala.gre.ac.uk/id/eprint/25577

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