Hero of Alexandria (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Hero of Alexandria" in English language version.

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  • Tybjerg, Karin (December 2004). "Hero of Alexandria's Mechanical Geometry". Apeiron. 37 (4): 29–56. doi:10.1515/APEIRON.2004.37.4.29. ISSN 2156-7093.
  • Heron's text is (translation by Masià):
    "Then, let it be necessary to measure, say, the path between Alexandria and Rome along a line – or rather along a great-circle arc on the earth – if it has been agreed that the circumference of the earth is 252,000 stades – as Eratosthenes, having worked rather more accurately than others, showed in his book entitled On the Measurement of the Earth. Now, let <the> same lunar eclipse have been observed at Alexandria and Rome. If one is found in the records, we will use that, or, if not, it will be possible for us to state our own observations because lunar eclipses occur at 5 and 6 month intervals. Now let an eclipse be found <in the records> – this one, in the stated regions: in Alexandria in the 5th hour of the night, and the same one in the 3rd hour in Rome – obviously the same night. And let the night – that is, the day circle with respect to which the sun moves on the said night – be 9 (or 10) days from the vernal equinox in the direction of the winter solstice."
    Sidoli, Nathan (2011). "Heron of Alexandria's Date" (PDF). Centaurus. 53: 55–61. doi:10.1111/j.1600-0498.2010.00203.x.
    Masià, Ramon (2015). "On dating Hero of Alexandria". Archive for History of Exact Sciences. 69 (3): 231–255. JSTOR 24569551.

gla.ac.uk

theses.gla.ac.uk

harvard.edu

ui.adsabs.harvard.edu

jstor.org

  • Heron's text is (translation by Masià):
    "Then, let it be necessary to measure, say, the path between Alexandria and Rome along a line – or rather along a great-circle arc on the earth – if it has been agreed that the circumference of the earth is 252,000 stades – as Eratosthenes, having worked rather more accurately than others, showed in his book entitled On the Measurement of the Earth. Now, let <the> same lunar eclipse have been observed at Alexandria and Rome. If one is found in the records, we will use that, or, if not, it will be possible for us to state our own observations because lunar eclipses occur at 5 and 6 month intervals. Now let an eclipse be found <in the records> – this one, in the stated regions: in Alexandria in the 5th hour of the night, and the same one in the 3rd hour in Rome – obviously the same night. And let the night – that is, the day circle with respect to which the sun moves on the said night – be 9 (or 10) days from the vernal equinox in the direction of the winter solstice."
    Sidoli, Nathan (2011). "Heron of Alexandria's Date" (PDF). Centaurus. 53: 55–61. doi:10.1111/j.1600-0498.2010.00203.x.
    Masià, Ramon (2015). "On dating Hero of Alexandria". Archive for History of Exact Sciences. 69 (3): 231–255. JSTOR 24569551.
  • Smyly, J. Gilbart (1920). "Heron's Formula for Cube Root". Hermathena. 19 (42): 64–67. JSTOR 23037103.

newscientist.com

rochester.edu

history.rochester.edu

ruc.dk

akira.ruc.dk

st-andrews.ac.uk

mathshistory.st-andrews.ac.uk

uh.edu

engines.egr.uh.edu

utoronto.ca

individual.utoronto.ca

  • Heron's text is (translation by Masià):
    "Then, let it be necessary to measure, say, the path between Alexandria and Rome along a line – or rather along a great-circle arc on the earth – if it has been agreed that the circumference of the earth is 252,000 stades – as Eratosthenes, having worked rather more accurately than others, showed in his book entitled On the Measurement of the Earth. Now, let <the> same lunar eclipse have been observed at Alexandria and Rome. If one is found in the records, we will use that, or, if not, it will be possible for us to state our own observations because lunar eclipses occur at 5 and 6 month intervals. Now let an eclipse be found <in the records> – this one, in the stated regions: in Alexandria in the 5th hour of the night, and the same one in the 3rd hour in Rome – obviously the same night. And let the night – that is, the day circle with respect to which the sun moves on the said night – be 9 (or 10) days from the vernal equinox in the direction of the winter solstice."
    Sidoli, Nathan (2011). "Heron of Alexandria's Date" (PDF). Centaurus. 53: 55–61. doi:10.1111/j.1600-0498.2010.00203.x.
    Masià, Ramon (2015). "On dating Hero of Alexandria". Archive for History of Exact Sciences. 69 (3): 231–255. JSTOR 24569551.

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