Results 11 to 20 of about 1,329 (190)
Open Mathematics, 2011 R. Hartshorne and A. Hirschowitz proved that a generic collection of lines on P^n, n>2, has bipolynomial Hilbert function. We extend this result to a specialization of the collection of generic lines, by considering a union of lines and 3-dimensional ...
Carlini Enrico +2 more
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Teaching the History of Tracking Time with Technology
Journal of Mathematics Education at Teachers College, 2016 This article focuses on the mathematical value of teaching angles through the use of sundials in the classroom. The history of sundials and the mathematics embedded within them is discussed in detail.
Margaret Fitz
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An Archaeological Find from Ottoman Northern Arabia: A Nabatean Sundial from Madā’in Sāliḥ”
Osmanli Bilimi Arastirmalari, 2023 The present article addresses the Turkish translation of John F. Healey’s article titled “A Nabataean Sundial from Madā’in Sāliḥ” as originally published in the journal Syria (vol.66, nr. 1/4) in 1989. J. F.
İbrahim Oğuzhan, Hakan Temir
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Three examples of ancient "universal" portable sundials
, 2020 International audienceAncient portable sundials represent only 5% to 6% of the corpus of all ancient sundials, which is at present estimated to be between 500 and 600 ...
Savoie, Denis
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THE «ALTERNATIVE» MEANS OF USAGE OF SCIENTIFIC INSTRUMENTS IN RUSSIA OF THE 18TH CENTURY
Вестник Брянского государственного университета, 2021 The 18th century was marked by the appearance of a great number of unusual objects in Russia. Besides military ships, wardrobes and beds, wigs and Holland-fashioned suites they were all kinds of scientific instruments – compasses, astrolabes, sundials ...
Lupanova Ye.M.
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Self-orienting armillary dial of the Professor Radovan Danić [PDF]
Glasnik Srpskog Geografskog Društva, 2020 Prof. Radovan Danić, PhD (1893-1979), an honorary lifetime President of the Astronomical Society Ruđer Bošković in Belgrade, owned a brass universal equinoctial ring sundial (98 mm in diameter), preserved by his descendants, who continued his ...
Tadić Milutin, Prnjat Zorica
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Analemmatic and horizontal sundials of the Bronze Age (Northern Black Sea Coast) [PDF]
Archaeoastronomy and Ancient Technologies, 2013 The paper presents the results of a study of unique slab with images of Srubna burial of tumuli group Popov Yar-2 (Ukraine) and slab of Srubna burial of tumulus field Tavriya-1 (Russia). A distinctive feature of the images is the orderliness and symmetry
Vodolazhskaya, L.N.
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Bronze Age sundial from Prokletije (Montenegro) [PDF]
Archaeoastronomy and Ancient Technologies, 2021 The article presents the results of a study of signs on a Bronze Age slab "Sun stone" discovered at the foot of Maja e Can in Volušnica massif (Prokletije National Park, Montenegro). Studies have shown that the slab is an analemmatic sundial.
Petricevic M.B., Vodolazhskaya L.N.
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Sundials. Inventory of a forgotten heritage [PDF]
, 2023 This article focuses on the collective project Relógios de Sol. Inventário de um património esquecido [Sundials. Inventory of a forgotten heritage], setting out its objectives, scope of action and research, together with the undertaken outreach ...
Lopes, Ângela +2 more
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The 16th Century Diptych Sundials from Croatia
, 2023 Preklopni sunčani satovi s kompasom iz 16. stoljeća predstavljali su jedan od najvažnijih povijesnih postignuća u individualnom mjerenju vremena. Ako se pravilno upotrebljavaju, osim svoje točnosti, omogućavali su mjerenje vremena na više različitih ...
Viduka, Anamaria
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