Segon (Catalan Wikipedia)

Analysis of information sources in references of the Wikipedia article "Segon" in Catalan language version.

Last modified: 07:11:19, 20 August 2026 (UTC)

Ref.Un. Ref.Website

Global rank Catalan rank

107web.archive.org

1^st place

87adsabs.harvard.edu

14^th place

22^nd place

87doi.org

2^nd place

4^th place

76bipm.org

1,781^st place

445^th place

41navy.mil

206^th place

568^th place

32leapsecond.com

low place

22books.google.cat

516^th place

3^rd place

22archive.org

6^th place

15^th place

11worldcat.org

4^th place

6^th place

11springer.com

182^nd place

171^st place

11abc.net.au

120^th place

333^rd place

11usc.edu

1,432^nd place

1,320^th place

11cam.ac.uk

569^th place

602^nd place

11arxiv.org

49^th place

84^th place

11npl.co.uk

low place

7,550^th place

11nist.gov

708^th place

520^th place

11gencat.cat

550^th place

5^th place

11theverge.

low place

11iec.cat

3,776^th place

24^th place

abc.net.au (Global: 120^th place; Catalan: 333^rd place)

ABC Science: Keeping Time

adsabs.harvard.edu (Global: 14^th place; Catalan: 22^nd place)

W Markowitz, RG Hall, L Essen, JVL Parry «Frequency of cesium in terms of ephemeris time». Physical Review Letters, 1, 3, 1958, p. 105–107. Bibcode: 1958PhRvL...1..105M. DOI: 10.1103/PhysRevLett.1.105.
S Leschiutta «The definition of the 'atomic' second». Metrologia, 42, 3, 2005, p. S10–S19. Bibcode: 2005Metro..42S..10L. DOI: 10.1088/0026-1394/42/3/S03.
DD McCarthy, C Hackman, R Nelson «The Physical Basis of the Leap Second». Astronomical Journal, 136, 5, 2008, p. 1906–1908. Bibcode: 2008AJ....136.1906M. DOI: 10.1088/0004-6256/136/5/1906. «... the SI second is equivalent to an older measure of the second of UT1, which was too small to start with and further, as the duration of the UT1 second increases, the discrepancy widens.»
In the late 1950s, the caesium standard was used to measure both the current mean length of the second of mean solar time (UT2) (9.192.631.830 cycles) and also the second of ephemeris time (ET) (9.192.631.770±20 cycles), see L Essen «Time Scales». Metrologia, 4, 4, 1968, p. 161–165. Bibcode: 1968Metro...4..161E. DOI: 10.1088/0026-1394/4/4/003.. As noted in page 162, the 9.192.631.770 figure was chosen for the SI second. L Essen in the same 1968 article stated that this value "seemed reasonable in view of the variations in UT2".
See page 515 in RA Nelsonet al.; McCarthy, D D; Malys, S; Levine, J; Guinot, B; Fliegel, H F; Beard, R L; Bartholomew, T R «The leap second: its history and possible future». Metrologia, 38, 6, 2000, p. 509–529. Bibcode: 2001Metro..38..509N. DOI: 10.1088/0026-1394/38/6/6.
AD Ludlow et al. «Systematic study of the ⁸⁷Sr clock transition in an optical lattice». Physical Review Letters, 96, 3, 2006, p. 033003. arXiv: physics/0508041. Bibcode: 2006PhRvL..96c3003L. DOI: 10.1103/PhysRevLett.96.033003.
R Wynands, S Weyers «Atomic fountain clocks». Metrologia, 42, 3, 2005, p. S64–S79. Bibcode: 2005Metro..42S..64W. DOI: 10.1088/0026-1394/42/3/S08.

archive.org (Global: 6^th place; Catalan: 15^th place)

Willsberger, Johann. Clocks & watches. Nova York: Dial Press, 1975. ISBN 0-8037-4475-7. Fotografia de pàgina completa a color: pàgina del 4t capítol, tercera de les fotos a partir d'aquell punt (ni les pàgines ni les fotos estan numerades).
DD McCarthy, C Hackman, R Nelson «The Physical Basis of the Leap Second». Astronomical Journal, 136, 5, 2008, p. 1906–1908. Bibcode: 2008AJ....136.1906M. DOI: 10.1088/0004-6256/136/5/1906. «... the SI second is equivalent to an older measure of the second of UT1, which was too small to start with and further, as the duration of the UT1 second increases, the discrepancy widens.»

arxiv.org (Global: 49^th place; Catalan: 84^th place)

AD Ludlow et al. «Systematic study of the ⁸⁷Sr clock transition in an optical lattice». Physical Review Letters, 96, 3, 2006, p. 033003. arXiv: physics/0508041. Bibcode: 2006PhRvL..96c3003L. DOI: 10.1103/PhysRevLett.96.033003.

bipm.org (Global: 1,781^st place; Catalan: 445^th place)

«Unit of time (second) (Definició oficial del segon)» (en anglès). SI brochure. BIPM. Arxivat de l'original el 2011-08-12. [Consulta: 30 octubre 2011].
«Resolució 5 de la 10a. Conferència General de Pesos i Mesures» (en francès). BIPM, 1954.
«Resolució 9 de l'11a Conferència General de Pesos i Mesures» (en anglès). BIPM, 1960.
«Resolució 1 de la 13a. Conferència General de Pesos i Mesures» (en anglès). BIPM, 1967.
Unit of time (second) Arxivat 2011-08-12 a Wayback Machine., SI brochure, Section 2.1.1.3, Oficina Internacional de Pesos i Mesures
Définition de l'unité de temps (seconde) Resolució número 9 de la 11^a Conferència General de Pesos i Mesures, 1960. Oficina Internacional de Pesos i Mesures

books.google.cat (Global: 516^th place; Catalan: 3^rd place)

al-Biruni; Sachau C Edward. The chronology of ancient nations: an English version of the Arabic text of the Athâr-ul-Bâkiya of Albîrûnî, or "Vestiges of the Past" (en anglès). Londres: W.H. Allen, 1879, p. 147–149. OCLC 9986841.
«Reports of the committee on electrical standards» (en anglès) p. 90. Jenkin, 1873. [Consulta: 28 maig 2013].

cam.ac.uk (Global: 569^th place; Catalan: 602^nd place)

cl.cam.ac.uk

See page 515 in RA Nelsonet al.; McCarthy, D D; Malys, S; Levine, J; Guinot, B; Fliegel, H F; Beard, R L; Bartholomew, T R «The leap second: its history and possible future». Metrologia, 38, 6, 2000, p. 509–529. Bibcode: 2001Metro..38..509N. DOI: 10.1088/0026-1394/38/6/6.

doi.org (Global: 2^nd place; Catalan: 4^th place)

dx.doi.org

W Markowitz, RG Hall, L Essen, JVL Parry «Frequency of cesium in terms of ephemeris time». Physical Review Letters, 1, 3, 1958, p. 105–107. Bibcode: 1958PhRvL...1..105M. DOI: 10.1103/PhysRevLett.1.105.
S Leschiutta «The definition of the 'atomic' second». Metrologia, 42, 3, 2005, p. S10–S19. Bibcode: 2005Metro..42S..10L. DOI: 10.1088/0026-1394/42/3/S03.
DD McCarthy, C Hackman, R Nelson «The Physical Basis of the Leap Second». Astronomical Journal, 136, 5, 2008, p. 1906–1908. Bibcode: 2008AJ....136.1906M. DOI: 10.1088/0004-6256/136/5/1906. «... the SI second is equivalent to an older measure of the second of UT1, which was too small to start with and further, as the duration of the UT1 second increases, the discrepancy widens.»
In the late 1950s, the caesium standard was used to measure both the current mean length of the second of mean solar time (UT2) (9.192.631.830 cycles) and also the second of ephemeris time (ET) (9.192.631.770±20 cycles), see L Essen «Time Scales». Metrologia, 4, 4, 1968, p. 161–165. Bibcode: 1968Metro...4..161E. DOI: 10.1088/0026-1394/4/4/003.. As noted in page 162, the 9.192.631.770 figure was chosen for the SI second. L Essen in the same 1968 article stated that this value "seemed reasonable in view of the variations in UT2".
See page 515 in RA Nelsonet al.; McCarthy, D D; Malys, S; Levine, J; Guinot, B; Fliegel, H F; Beard, R L; Bartholomew, T R «The leap second: its history and possible future». Metrologia, 38, 6, 2000, p. 509–529. Bibcode: 2001Metro..38..509N. DOI: 10.1088/0026-1394/38/6/6.
AD Ludlow et al. «Systematic study of the ⁸⁷Sr clock transition in an optical lattice». Physical Review Letters, 96, 3, 2006, p. 033003. arXiv: physics/0508041. Bibcode: 2006PhRvL..96c3003L. DOI: 10.1103/PhysRevLett.96.033003.
R Wynands, S Weyers «Atomic fountain clocks». Metrologia, 42, 3, 2005, p. S64–S79. Bibcode: 2005Metro..42S..64W. DOI: 10.1088/0026-1394/42/3/S08.

gencat.cat (Global: 550^th place; Catalan: 5^th place)

www20.gencat.cat

«Abreviacions» (pdf) p. 37. Barcelona: Generalitat de Catalunya; Departament de la Presidència; Secretaria de Política Lingüística, 2005. Arxivat de l'original el 26 d'agost 2014. [Consulta: 28 maig 2013].

iec.cat (Global: 3,776^th place; Catalan: 24^th place)

dlc.iec.cat

«Segon». Diccionari General de la Llengua Catalana. Institut d'Estudis Catalans. [Consulta: 28 maig 2013].

leapsecond.com (Global: low place; Catalan: low place)

W Markowitz, RG Hall, L Essen, JVL Parry «Frequency of cesium in terms of ephemeris time». Physical Review Letters, 1, 3, 1958, p. 105–107. Bibcode: 1958PhRvL...1..105M. DOI: 10.1103/PhysRevLett.1.105.
In the late 1950s, the caesium standard was used to measure both the current mean length of the second of mean solar time (UT2) (9.192.631.830 cycles) and also the second of ephemeris time (ET) (9.192.631.770±20 cycles), see L Essen «Time Scales». Metrologia, 4, 4, 1968, p. 161–165. Bibcode: 1968Metro...4..161E. DOI: 10.1088/0026-1394/4/4/003.. As noted in page 162, the 9.192.631.770 figure was chosen for the SI second. L Essen in the same 1968 article stated that this value "seemed reasonable in view of the variations in UT2".

navy.mil (Global: 206^th place; Catalan: 568^th place)

tycho.usno.navy.mil

«Leap Seconds». Time Service Department, United States Naval Observatory. Arxivat de l'original el 2012-06-11. [Consulta: 31 desembre 2006].

nist.gov (Global: 708^th place; Catalan: 520^th place)

tf.nist.gov

«NIST-F1 Cesium Fountain Atomic Clock». NIST. [Consulta: 19 agost 2009].

npl.co.uk (Global: low place; Catalan: 7,550^th place)

«Trapped ion optical frequency standards». National Physical Laboratory. Arxivat de l'original el 2009-02-14. [Consulta: 25 novembre 2012].

springer.com (Global: 182^nd place; Catalan: 171^st place)

Tekeli, Sevim. «Taqi al-Din». A: Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures (en anglès). Kluwer Academic Publishers, 1997.

theverge. (Global: low place; Catalan: low place)

Vincent, James. «El reloj más preciso jamás construido sólo pierde un segundo cada 15 000 millones de años». TheVerge. Arxivat de l'com/2015/4/22/8466681/most-accurate-atomic-clock-optical-lattice-strontium original el 27 de enero de 2018. [Consulta: 26 enero 2018].

usc.edu (Global: 1,432^nd place; Catalan: 1,320^th place)

illumin.usc.edu

«Long Case Clock: Pendulum» (en anglès). The University of Southern California. Arxivat de l'original el 2016-03-06. [Consulta: 13 juliol 2009].

web.archive.org (Global: 1^st place; Catalan: 1^st place)

«Unit of time (second) (Definició oficial del segon)» (en anglès). SI brochure. BIPM. Arxivat de l'original el 2011-08-12. [Consulta: 30 octubre 2011].
«Long Case Clock: Pendulum» (en anglès). The University of Southern California. Arxivat de l'original el 2016-03-06. [Consulta: 13 juliol 2009].
Unit of time (second) Arxivat 2011-08-12 a Wayback Machine., SI brochure, Section 2.1.1.3, Oficina Internacional de Pesos i Mesures
«Leap Seconds». Time Service Department, United States Naval Observatory. Arxivat de l'original el 2012-06-11. [Consulta: 31 desembre 2006].
«Trapped ion optical frequency standards». National Physical Laboratory. Arxivat de l'original el 2009-02-14. [Consulta: 25 novembre 2012].
«Abreviacions» (pdf) p. 37. Barcelona: Generalitat de Catalunya; Departament de la Presidència; Secretaria de Política Lingüística, 2005. Arxivat de l'original el 26 d'agost 2014. [Consulta: 28 maig 2013].
Vincent, James. «El reloj más preciso jamás construido sólo pierde un segundo cada 15 000 millones de años». TheVerge. Arxivat de l'com/2015/4/22/8466681/most-accurate-atomic-clock-optical-lattice-strontium original el 27 de enero de 2018. [Consulta: 26 enero 2018].

worldcat.org (Global: 4^th place; Catalan: 6^th place)

al-Biruni; Sachau C Edward. The chronology of ancient nations: an English version of the Arabic text of the Athâr-ul-Bâkiya of Albîrûnî, or "Vestiges of the Past" (en anglès). Londres: W.H. Allen, 1879, p. 147–149. OCLC 9986841.

Segon (Catalan Wikipedia)

abc.net.au (Global: 120th place; Catalan: 333rd place)

adsabs.harvard.edu (Global: 14th place; Catalan: 22nd place)

archive.org (Global: 6th place; Catalan: 15th place)

arxiv.org (Global: 49th place; Catalan: 84th place)

bipm.org (Global: 1,781st place; Catalan: 445th place)

books.google.cat (Global: 516th place; Catalan: 3rd place)

cam.ac.uk (Global: 569th place; Catalan: 602nd place)

cl.cam.ac.uk

doi.org (Global: 2nd place; Catalan: 4th place)

dx.doi.org

gencat.cat (Global: 550th place; Catalan: 5th place)

www20.gencat.cat

iec.cat (Global: 3,776th place; Catalan: 24th place)

dlc.iec.cat

leapsecond.com (Global: low place; Catalan: low place)

navy.mil (Global: 206th place; Catalan: 568th place)

tycho.usno.navy.mil

nist.gov (Global: 708th place; Catalan: 520th place)

tf.nist.gov

npl.co.uk (Global: low place; Catalan: 7,550th place)

springer.com (Global: 182nd place; Catalan: 171st place)

theverge. (Global: low place; Catalan: low place)

usc.edu (Global: 1,432nd place; Catalan: 1,320th place)

illumin.usc.edu

web.archive.org (Global: 1st place; Catalan: 1st place)

worldcat.org (Global: 4th place; Catalan: 6th place)

abc.net.au (Global: 120^th place; Catalan: 333^rd place)

adsabs.harvard.edu (Global: 14^th place; Catalan: 22^nd place)

archive.org (Global: 6^th place; Catalan: 15^th place)

arxiv.org (Global: 49^th place; Catalan: 84^th place)

bipm.org (Global: 1,781^st place; Catalan: 445^th place)

books.google.cat (Global: 516^th place; Catalan: 3^rd place)

cam.ac.uk (Global: 569^th place; Catalan: 602^nd place)

doi.org (Global: 2^nd place; Catalan: 4^th place)

gencat.cat (Global: 550^th place; Catalan: 5^th place)

iec.cat (Global: 3,776^th place; Catalan: 24^th place)

navy.mil (Global: 206^th place; Catalan: 568^th place)

nist.gov (Global: 708^th place; Catalan: 520^th place)

npl.co.uk (Global: low place; Catalan: 7,550^th place)

springer.com (Global: 182^nd place; Catalan: 171^st place)

usc.edu (Global: 1,432^nd place; Catalan: 1,320^th place)

web.archive.org (Global: 1^st place; Catalan: 1^st place)

worldcat.org (Global: 4^th place; Catalan: 6^th place)