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  1. Avicenna’s Addendum to His Recension of Ptolemy’s Almagest
    Autor*in: Nikfahm-Khubravan, Sajjad
    Erschienen: 2024
    Verlag:  De Gruyter, Berlin

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  2. A novel estimator of earth's curvature (allowing for inference as well)
    Autor*in: Bell, David R.; Ledoit, Olivier; Wolf, Michael
    Erschienen: [2023]
    Verlag:  University of Zurich, Department of Economics, Zurich

    This paper estimates the curvature of the Earth, defined as one over its radius, without relying on physical measurements. The orthodox model states that the Earth is (nearly) spherical with a curvature of π/20'000 km. By contrast, the heterodox... mehr

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    Verlag (kostenfrei)
    Resolving-System (kostenfrei)
    Resolving-System (kostenfrei)

    Standort:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signatur:
    DS 191
    Fernleihe:
    keine Fernleihe

     

    This paper estimates the curvature of the Earth, defined as one over its radius, without relying on physical measurements. The orthodox model states that the Earth is (nearly) spherical with a curvature of π/20'000 km. By contrast, the heterodox flat-Earth model stipulates a curvature of zero. Abstracting from the well-worn arguments for and against both models, rebuttals and counter-rebuttals ad infinitum, we propose a novel statistical methodology based on verifiable flight times along regularly scheduled commercial airline routes; this methodology allows for both estimating and making inference for Earth's curvature. In particular, a formal hypothesis test resolutely rejects the flat-Earth model, whereas it does not reject the orthodox spherical-Earth model.

     
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    Quelle: Verbundkataloge
    Sprache: Englisch
    Medientyp: Buch (Monographie)
    Format: Online
    Weitere Identifier:
    hdl: 10419/278788
    Auflage/Ausgabe: This version: September 2023
    Schriftenreihe: Working paper series / University of Zurich, Department of Economics ; no. 431
    Schlagworte: Flat earth; flight times; nonlinear least squares; trigonometry
    Umfang: 1 Online-Ressource (circa 27 Seiten), Illustrationen
  3. The works of Sir Thomas Urquhart of Cromarty, knight
    Autor*in: Urquhart, Thomas
    Erschienen: 1971
    Verlag:  AMS Press, New York

    Standort:
    Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky
    Signatur:
    N 2190
    Fernleihe:
    keine Fernleihe
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    Quelle: Verbundkataloge
    Sprache: Englisch
    Medientyp: Buch (Monographie)
    Format: Druck
    Schriftenreihe: Maitland club. Publications. no. 30
    Schlagworte: Trigonometry; Language, Universal; Trigonométrie; Langue universelle; trigonometry; Language, Universal; Trigonometry; Biographies
    Umfang: XXII, 419 Seiten
    Bemerkung(en):

    Facsimile reprint of the edition published: Edinburgh, Maitland Club,1834

    Epigrams: divine and moral ... London, 1641. -- The trissotetras: or, A most exquisite table for resolving all manner of triangles ... London, 1645. -- [Pantochronochanon (romanized form)]: or, A peculiar promptuary of time ... deducing the true pedigree and lineal descent of the ... Vrqvharts, in the house of Cromartie, since the creation of the world ... London, 1652. -- [Ekskyvalauron (romanized form)] or, The discovery of a most exquisite jewel ... Serving in this place, to frontal a vindication of the honour of Scotland ... London, 1652. -- Logopandecteision, or An introdvction to the vniversal langvage ... London, 1653.
  4. A novel estimator of earth's curvature (allowing for inference as well)
    Autor*in: Bell, David R.; Ledoit, Olivier; Wolf, Michael
    Erschienen: April 2023
    Verlag:  University of Zurich, Department of Economics, Zurich

    This paper estimates the curvature of the Earth, defined as one over its radius, without using any physics. The orthodox model is that the Earth is nearly spherical with a curvature of π/20, 000 km. By contrast, the heterodox flat-Earth model... mehr

    Zugang:
    Verlag (lizenzpflichtig)
    Resolving-System (kostenfrei)
    Resolving-System (kostenfrei)

    Standort:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signatur:
    DS 191
    Fernleihe:
    keine Fernleihe

     

    This paper estimates the curvature of the Earth, defined as one over its radius, without using any physics. The orthodox model is that the Earth is nearly spherical with a curvature of π/20, 000 km. By contrast, the heterodox flat-Earth model stipulates a curvature of zero. Abstracting from the well-worn arguments for and against both models, rebuttals and counter-rebuttals ad infinitum, we propose a novel statistical methodology based on verifiable flight times along regularly scheduled commercial airline routes; this methodology allows for both estimating and making inference for the curvature. In particular, a formal hypothesis test resolutely rejects the flat-Earth model, whereas it does not reject the orthodox spherical-Earth model.

     
    Export in Literaturverwaltung   RIS-Format
      BibTeX-Format
    Quelle: Verbundkataloge
    Sprache: Englisch
    Medientyp: Buch (Monographie)
    Format: Online
    Weitere Identifier:
    hdl: 10419/275649
    Schriftenreihe: Working paper series / University of Zurich, Department of Economics ; no. 431
    Schlagworte: Flat-Earth model; geodesy; nonlinear least squares; trigonometry
    Umfang: 1 Online-Ressource (circa 30 Seiten), Illustrationen