நொடி (கால அளவு) (Tamil Wikipedia)

Analysis of information sources in references of the Wikipedia article "நொடி (கால அளவு)" in Tamil language version.

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7doi.org

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7harvard.edu

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4books.google.com

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3nist.gov

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2web.archive.org

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2archive.org

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2leapsecond.com

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1bipm.org

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1learnersdictionary.com

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1etymonline.com

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1easyunitconverter.com

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1usc.edu

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1webcitation.org

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1navy.mil

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1cam.ac.uk

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1nrc-cnrc.gc.ca

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archive.org

Willsberger, Johann (1975). Clocks & watches. New York: Dial Press. பன்னாட்டுத் தரப்புத்தக எண் 0-8037-4475-7. full page color photo: 4th caption page, 3rd photo thereafter (neither pages nor photos are numbered).
DD McCarthy, C Hackman, R Nelson; Hackman; Nelson (2008). "The Physical Basis of the Leap Second". Astronomical Journal 136 (5): 1906–1908. doi:10.1088/0004-6256/136/5/1906. Bibcode: 2008AJ....136.1906M. https://archive.org/details/sim_astronomical-journal_2008-11_136_5/page/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.".

bipm.org

"Unit of time (second)". SI Brochure. BIPM. பார்க்கப்பட்ட நாள் December 22, 2013.

books.google.com

al-Biruni (1879). The chronology of ancient nations: an English version of the Arabic text of the Athâr-ul-Bâkiya of Albîrûnî, or "Vestiges of the Past". Sachau C Edward. pp. 147–149. {{cite book}}: More than one of |author= and |last= specified (help); More than one of |authorlink= and |author-link= specified (help)
Helaine Selin (July 31, 1997). Encyclopaedia of the History of Science, Technology, and Medicine in Non-Westen Cultures. Springer Science & Business Media. p. 934. பன்னாட்டுத் தரப்புத்தக எண் 978-0-7923-4066-9. {{cite book}}: More than one of |ISBN= and |isbn= specified (help); More than one of |author= and |last= specified (help)
Greg Jenner (January 29, 2015). A Million Years in a Day: A Curious History of Everyday Life. Orion. p. 275. பன்னாட்டுத் தரப்புத்தக எண் 978-0-297-86979-5. {{cite book}}: More than one of |ISBN= and |isbn= specified (help); More than one of |author= and |last= specified (help)
Jenkin, ed. (1873). Reports of the committee on electrical standards. British Association for the Advancement of Science. p. 90.

cam.ac.uk

cl.cam.ac.uk

See page 515 in RA Nelson et al. (2000). "The leap second: its history and possible future". Metrologia 38 (6): 509–529. doi:10.1088/0026-1394/38/6/6. Bibcode: 2001Metro..38..509N. http://www.cl.cam.ac.uk/~mgk25/time/metrologia-leapsecond.pdf.

doi.org

dx.doi.org

W Markowitz, RG Hall, L Essen, JVL Parry; Hall; Essen; Parry (1958). "Frequency of cesium in terms of ephemeris time". Physical Review Letters 1 (3): 105–107. doi:10.1103/PhysRevLett.1.105. Bibcode: 1958PhRvL...1..105M. http://www.leapsecond.com/history/1958-PhysRev-v1-n3-Markowitz-Hall-Essen-Parry.pdf.
S Leschiutta (2005). "The definition of the 'atomic' second". Metrologia 42 (3): S10–S19. doi:10.1088/0026-1394/42/3/S03. Bibcode: 2005Metro..42S..10L.
DD McCarthy, C Hackman, R Nelson; Hackman; Nelson (2008). "The Physical Basis of the Leap Second". Astronomical Journal 136 (5): 1906–1908. doi:10.1088/0004-6256/136/5/1906. Bibcode: 2008AJ....136.1906M. https://archive.org/details/sim_astronomical-journal_2008-11_136_5/page/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) (7009919263183000000♠9192631830 cycles) and also the second of ephemeris time (ET) (7009919263177000000♠9192631770±20 cycles), see L Essen (1968). "Time Scales". Metrologia 4 (4): 161–165. doi:10.1088/0026-1394/4/4/003. Bibcode: 1968Metro...4..161E. http://www.leapsecond.com/history/1968-Metrologia-v4-n4-Essen.pdf.
See page 515 in RA Nelson et al. (2000). "The leap second: its history and possible future". Metrologia 38 (6): 509–529. doi:10.1088/0026-1394/38/6/6. Bibcode: 2001Metro..38..509N. http://www.cl.cam.ac.uk/~mgk25/time/metrologia-leapsecond.pdf.
AD Ludlow et al. (2006). "Systematic study of the ⁸⁷Sr clock transition in an optical lattice". Physical Review Letters 96 (3): 033003. doi:10.1103/PhysRevLett.96.033003. Bibcode: 2006PhRvL..96c3003L.
R Wynands, S Weyers; Weyers (2005). "Atomic fountain clocks". Metrologia 42 (3): S64–S79. doi:10.1088/0026-1394/42/3/S08. Bibcode: 2005Metro..42S..64W.

easyunitconverter.com

"நேர அலகு மாற்றி (ஆங்கில மொழியில்)". ஈசி யுனிட்டுக் கன்வட்டர். Archived from the original on 2012-10-31. பார்க்கப்பட்ட நாள் அக்டோபர் 18, 2012.

etymonline.com

"Online Etymology Dictionary".

harvard.edu

adsabs.harvard.edu

W Markowitz, RG Hall, L Essen, JVL Parry; Hall; Essen; Parry (1958). "Frequency of cesium in terms of ephemeris time". Physical Review Letters 1 (3): 105–107. doi:10.1103/PhysRevLett.1.105. Bibcode: 1958PhRvL...1..105M. http://www.leapsecond.com/history/1958-PhysRev-v1-n3-Markowitz-Hall-Essen-Parry.pdf.
S Leschiutta (2005). "The definition of the 'atomic' second". Metrologia 42 (3): S10–S19. doi:10.1088/0026-1394/42/3/S03. Bibcode: 2005Metro..42S..10L.
DD McCarthy, C Hackman, R Nelson; Hackman; Nelson (2008). "The Physical Basis of the Leap Second". Astronomical Journal 136 (5): 1906–1908. doi:10.1088/0004-6256/136/5/1906. Bibcode: 2008AJ....136.1906M. https://archive.org/details/sim_astronomical-journal_2008-11_136_5/page/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) (7009919263183000000♠9192631830 cycles) and also the second of ephemeris time (ET) (7009919263177000000♠9192631770±20 cycles), see L Essen (1968). "Time Scales". Metrologia 4 (4): 161–165. doi:10.1088/0026-1394/4/4/003. Bibcode: 1968Metro...4..161E. http://www.leapsecond.com/history/1968-Metrologia-v4-n4-Essen.pdf.
See page 515 in RA Nelson et al. (2000). "The leap second: its history and possible future". Metrologia 38 (6): 509–529. doi:10.1088/0026-1394/38/6/6. Bibcode: 2001Metro..38..509N. http://www.cl.cam.ac.uk/~mgk25/time/metrologia-leapsecond.pdf.
AD Ludlow et al. (2006). "Systematic study of the ⁸⁷Sr clock transition in an optical lattice". Physical Review Letters 96 (3): 033003. doi:10.1103/PhysRevLett.96.033003. Bibcode: 2006PhRvL..96c3003L.
R Wynands, S Weyers; Weyers (2005). "Atomic fountain clocks". Metrologia 42 (3): S64–S79. doi:10.1088/0026-1394/42/3/S08. Bibcode: 2005Metro..42S..64W.

leapsecond.com

W Markowitz, RG Hall, L Essen, JVL Parry; Hall; Essen; Parry (1958). "Frequency of cesium in terms of ephemeris time". Physical Review Letters 1 (3): 105–107. doi:10.1103/PhysRevLett.1.105. Bibcode: 1958PhRvL...1..105M. http://www.leapsecond.com/history/1958-PhysRev-v1-n3-Markowitz-Hall-Essen-Parry.pdf.
In the late 1950s, the caesium standard was used to measure both the current mean length of the second of mean solar time (UT2) (7009919263183000000♠9192631830 cycles) and also the second of ephemeris time (ET) (7009919263177000000♠9192631770±20 cycles), see L Essen (1968). "Time Scales". Metrologia 4 (4): 161–165. doi:10.1088/0026-1394/4/4/003. Bibcode: 1968Metro...4..161E. http://www.leapsecond.com/history/1968-Metrologia-v4-n4-Essen.pdf.

learnersdictionary.com

"Second".. Merriam Webster Learner's Dictionary.

navy.mil

tycho.usno.navy.mil

"Leap Seconds". Time Service Department, United States Naval Observatory. Archived from the original on மே 27, 2012. பார்க்கப்பட்ட நாள் November 22, 2015.

nist.gov

physics.nist.gov

"Base unit definitions: Second". physics.nist.gov. பார்க்கப்பட்ட நாள் September 9, 2016.
"அனைத்துலக முறை அலகுகள் (அனைத்துலக முறை அலகுகள்) (ஆங்கில மொழியில்)". தரங்கள், தொழினுட்பத்துக்கான தேசிய நிறுவனம். பார்க்கப்பட்ட நாள் அக்டோபர் 18, 2012.

tf.nist.gov

"NIST-F1 Cesium Fountain Atomic Clock". NIST. பார்க்கப்பட்ட நாள் August 19, 2009.

nrc-cnrc.gc.ca

inms-ienm.nrc-cnrc.gc.ca

"Optical Frequency - Research Projects". February 28, 2006. Archived from the original on January 25, 2009.

usc.edu

illumin.usc.edu

Jessica Chappell (October 1, 2001). "The Long Case Clock: The Science and Engineering that Goes Into a Grandfather Clock". Illumin 1: 1. http://illumin.usc.edu/184/the-long-case-clock-engineering-behind-a-grandfather-clock/.

web.archive.org

"நேர அலகு மாற்றி (ஆங்கில மொழியில்)". ஈசி யுனிட்டுக் கன்வட்டர். Archived from the original on 2012-10-31. பார்க்கப்பட்ட நாள் அக்டோபர் 18, 2012.
"Optical Frequency - Research Projects". February 28, 2006. Archived from the original on January 25, 2009.

webcitation.org

"Leap Seconds". Time Service Department, United States Naval Observatory. Archived from the original on மே 27, 2012. பார்க்கப்பட்ட நாள் November 22, 2015.