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تسارع مدي (Arabic Wikipedia)

Analysis of information sources in references of the Wikipedia article "تسارع مدي" in Arabic language version.

refsWebsite
Global rank Arabic rank
10web.archive.org
1st place
1st place
4harvard.edu
18th place
33rd place
3royalsocietypublishing.org
1,993rd place
1,857th place
2archive.org
6th place
3rd place
1academie-sciences.fr
7,547th place
3,070th place
1books.google.com
3rd place
8th place
1numdam.org
8,650th place
low place
1doi.org
2nd place
5th place
1leapsecond.com
low place
low place
1wikipedia.org
low place
low place
1timeanddate.com
1,373rd place
1,368th place
1sciencedirect.com
149th place
233rd place
1wikibooks.org
4,043rd place
6,390th place

academie-sciences.fr

archive.org

  • Britton، John (1992). Models and Precision: The Quality of Ptolemy's Observations and Parameters. Garland Publishing Inc. ص. 157. ISBN:978-0815302155. مؤرشف من الأصل في 2021-05-06.
  • (1) In McCarthy، D D؛ Hackman، C؛ Nelson، R A (2008). "The Physical Basis of the Leap Second". Astronomical Journal. ج. 136: 1906–1908. Bibcode:2008AJ....136.1906M. DOI:10.1088/0004-6256/136/5/1906. it is stated (page 1908), that "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." :(2) In the late 1950s, the cesium standard was used to measure both the current mean length of the second of mean solar time (UT2) (result: 9192631830 cycles) and also the second of ephemeris time (ET) (result:9192631770±20 cycles), see "Time Scales", by L. Essen, in Metrologia, vol.4 (1968), pp.161–165, on p.162. As is well known, the 9192631770 figure was chosen for the SI second. L Essen in the same 1968 article (p.162) stated that this "seemed reasonable in view of the variations in UT2". نسخة محفوظة 14 ديسمبر 2017 على موقع واي باك مشين.

books.google.com

doi.org

  • (1) In McCarthy، D D؛ Hackman، C؛ Nelson، R A (2008). "The Physical Basis of the Leap Second". Astronomical Journal. ج. 136: 1906–1908. Bibcode:2008AJ....136.1906M. DOI:10.1088/0004-6256/136/5/1906. it is stated (page 1908), that "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." :(2) In the late 1950s, the cesium standard was used to measure both the current mean length of the second of mean solar time (UT2) (result: 9192631830 cycles) and also the second of ephemeris time (ET) (result:9192631770±20 cycles), see "Time Scales", by L. Essen, in Metrologia, vol.4 (1968), pp.161–165, on p.162. As is well known, the 9192631770 figure was chosen for the SI second. L Essen in the same 1968 article (p.162) stated that this "seemed reasonable in view of the variations in UT2". نسخة محفوظة 14 ديسمبر 2017 على موقع واي باك مشين.

harvard.edu

ui.adsabs.harvard.edu

leapsecond.com

  • (1) In McCarthy، D D؛ Hackman، C؛ Nelson، R A (2008). "The Physical Basis of the Leap Second". Astronomical Journal. ج. 136: 1906–1908. Bibcode:2008AJ....136.1906M. DOI:10.1088/0004-6256/136/5/1906. it is stated (page 1908), that "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." :(2) In the late 1950s, the cesium standard was used to measure both the current mean length of the second of mean solar time (UT2) (result: 9192631830 cycles) and also the second of ephemeris time (ET) (result:9192631770±20 cycles), see "Time Scales", by L. Essen, in Metrologia, vol.4 (1968), pp.161–165, on p.162. As is well known, the 9192631770 figure was chosen for the SI second. L Essen in the same 1968 article (p.162) stated that this "seemed reasonable in view of the variations in UT2". نسخة محفوظة 14 ديسمبر 2017 على موقع واي باك مشين.

numdam.org

archive.numdam.org

royalsocietypublishing.org

sciencedirect.com

timeanddate.com

web.archive.org

wikibooks.org

en.wikibooks.org

wikipedia.org

en.wikipedia.org

  • (1) In McCarthy، D D؛ Hackman، C؛ Nelson، R A (2008). "The Physical Basis of the Leap Second". Astronomical Journal. ج. 136: 1906–1908. Bibcode:2008AJ....136.1906M. DOI:10.1088/0004-6256/136/5/1906. it is stated (page 1908), that "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." :(2) In the late 1950s, the cesium standard was used to measure both the current mean length of the second of mean solar time (UT2) (result: 9192631830 cycles) and also the second of ephemeris time (ET) (result:9192631770±20 cycles), see "Time Scales", by L. Essen, in Metrologia, vol.4 (1968), pp.161–165, on p.162. As is well known, the 9192631770 figure was chosen for the SI second. L Essen in the same 1968 article (p.162) stated that this "seemed reasonable in view of the variations in UT2". نسخة محفوظة 14 ديسمبر 2017 على موقع واي باك مشين.