<Tr> <Td> </Td> <Td> This article is an orphan, as no other articles link to it . Please introduce links to this page from related articles; try the Find link tool for suggestions . (December 2013) </Td> </Tr> <P> This is a list of some experimental laboratory atomic clocks worldwide . </P> <Table> <Tr> <Th> Image </Th> <Th> Name </Th> <Th> Location </Th> </Tr> <Tr> <Td> </Td> <Td> CS1, CS2, CSF1, CSF2 </Td> <Td> Physikalisch - Technische Bundesanstalt, Braunschweig, Germany </Td> </Tr> <Tr> <Td> </Td> <Td> FOCS </Td> <Td> Federal Institute of Metrology METAS, Bern, Switzerland </Td> </Tr> <Tr> <Td> </Td> <Td> NPL - CsF2, Yb and Sr+ ion clocks, Sr lattice clock, 4 hydrogen masers </Td> <Td> National Physical Laboratory, Teddington, London, United Kingdom </Td> </Tr> <Tr> <Td> </Td> <Td> NIST - F1, NIST - F2 </Td> <Td> NIST laboratories, Boulder, Colorado </Td> </Tr> <Tr> <Td> </Td> <Td> Department of Defense master clock </Td> <Td> United States Naval Observatory, Washington, D.C., United States </Td> </Tr> <Tr> <Td> </Td> <Td> USNO Alternate Master Clock </Td> <Td> Schriever Air Force Base, Colorado, United States </Td> </Tr> <Tr> <Td> </Td> <Td> 18 cesium atomic clocks and 4 hydrogen maser clocks </Td> <Td> National Institute of Information and Communications Technology, Koganei, Tokyo, Japan </Td> </Tr> <Tr> <Td> </Td> <Td> Optical lattice clock </Td> <Td> University of Tokyo, Tokyo, Japan </Td> </Tr> <Tr> <Td> </Td> <Td> NMIJ - F1, NMIJ - F2 </Td> <Td> National Metrology Institute of Japan </Td> </Tr> <Tr> <Td> </Td> <Td> Optical clock </Td> <Td> Hubei, People's Republic of China </Td> </Tr> <Tr> <Td> </Td> <Td> Caesium Beam Atomic Clock </Td> <Td> Hong Kong Observatory, Kowloon, Hong Kong </Td> </Tr> <Tr> <Td> </Td> <Td> 9 Agilent 5071A caesium clocks </Td> <Td> National Standard Time and Frequency Laboratory, Taoyuan, Taiwan </Td> </Tr> <Tr> <Td> </Td> <Td> KRISS - 1 </Td> <Td> Korea Research Institute of Standards and Science, Daejeon, Republic of Korea </Td> </Tr> <Tr> <Td> </Td> <Td> Caesium atomic clocks </Td> <Td> National Metrology Centre, Singapore </Td> </Tr> <Tr> <Td> </Td> <Td> NPL clock 1, 2, 3, 4 and 5 </Td> <Td> National Physical Laboratory (NPL), New Delhi, India </Td> </Tr> <Tr> <Td> </Td> <Td> DOST - PAGASA Juan Time </Td> <Td> Department of Science and Technology, Taguig City, Metro Manila, Philippines </Td> </Tr> <Tr> <Td> </Td> <Td> Caesium clocks, Hydrogen Maser </Td> <Td> Indonesian Institute of Sciences KIM - LIPI, Puspitek, Tanggerang Selatan, Indonesia </Td> </Tr> <Tr> <Td> </Td> <Td> SOC: Space Optical Clock breadboard (Sr lattice clock) </Td> <Td> Science Team of the ESA Space Optical Clock mission, Düsseldorf, Braunschweig, Birmingham, Paris, Firenze, Torino, Prague </Td> </Tr> <Tr> <Td> Earth Low Earth Orbit Atomic Clock </Td> <Td> Deep Space Atomic Clock </Td> <Td> In development at Jet Propulsion Laboratory </Td> </Tr> </Table> <Tr> <Th> Image </Th> <Th> Name </Th> <Th> Location </Th> </Tr>

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