摘要:

AbstractThe well known Egyptian diagonal star tables found in coffins divide the zodiac into 36 regions and deep night into 12 hours of unequal length, changing with the seasons.The later Ramesside star tables from around 1150 BC have been seen before as an imperfect attempt to create a 24 hour system. A reanalysis of data now shows them to describe a division of the sky into 27‐29 regions, not 24, and they are therefore seen as listing lunar houses rather than hours. Some aspects of using transit stars are mentioned, and a computed check of Sirius as transit star gives a good fit for a date near 1600 BC. The use of lunar houses seems not to have been firmly dated anywhere at so early an age, and until now it has not been attested in Egypt or Europe at all before c. AD 300.The results are briefly compared to the ancient traditions of lunar houses and star transits in Asia, especially China.A new and more general result about solstice symmetries of decanal‐type hours is given, derived from linear equations, not sphaerics.In the German translation of Ptolemy's proof of solstice symmetry there is a confusing error, which is corrected.None of the findings corroborate previous impressions of the low status of Egyptian astron

ISSN:0008-8994    

DOI:10.1111/j.1600-0498.1992.tb00867.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:0008-8994    

DOI:10.1111/j.1600-0498.1992.tb00868.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

In the continuing debate on the relative priorities of Newton and Hooke, it is necessary to insist that Hooke was the one who in fact set upright the crucial problem of orbital motion, which had been conceptualised, as it were, upside down. Hooke rather than Newton stated the mechanical elements of orbital motion in terms adequate to the concept of inertia. [Westfall 1971, p. 427]

ISSN:0008-8994    

DOI:10.1111/j.1600-0498.1992.tb00869.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

John Hedley Brooke,Science and Religion: Some Historical Perspectives.Christian Wildberg,John Philoponus' Criticism of Aristotle's Theory of Aether.Euclide,Les ElémentsPaul Kunitzsch,Claudius Ptolemaus. Der Sternkatalog des Almagest. Die arabisch‐mittelalterliche Tradition. II. Die lateini‐sche Ubersetzung Gerhards von Cremona.George Molland, ed.,Thomas Bradwardine, Geometria Speculativa. Latin Text and English Translation with an Introduction and a Commentary.H. L. L. Busard: Jordanus de Nemore.De elementis arithmetke artis. A medieval treatise on number theory.Part I:Text and paraphrase.Jean de Murs, LeQuadripartitum nwnerorum.Michael Segre,In the Wake of Galileo.Bartholin, Erasmus,Experiments on Birefringent Icelandic CrystalFriedrich Steinle,Newtons Entwurf “Über die Gravitation”. Ein Stuck Entwicklungs‐geschichte seiner Mechanik.Zev Bechler,Newton's Physics and the Conceptual Structure of Scientific Revolution.Christine MacLeod,Inventing the Industrial Revolution. The English Patent SystemM. Fournier,The fabric of life. The rise and decline of seventeenth‐century microscopy.Jakob Bernoulli,Werke Band 2: Elementar‐mathematik.Wolfgang Breidert,George Berkeley.Scholz, Erhard,Symmetrie, Gruppe. Dualität.Bernard Bolzano,Gesamtausgabe, Reihe 1, Band 18, Mathematisch‐physikalische und philosophische SchriftenThomas Hapke,Die Zeitschrift fur physikalische Chemie. Hundert Jahre Wechselwir‐kitng zwischen Fachwissenschaft, Kommunikationsmedium und Gesellschaft.Finn Aaserud,Redirecting Science: Niels Bohr, Philanthropy and the Rise of Nuclear Physics.Kameshwar C. Wali,A Biography of S. Chandrasekhar.Donald MacKenzie.Inventing Accuracy: A Historical Sociology of Nuclear Missile Guidance.Herbert Mehrtens,Modeme ‐ Sprache ‐Mathematik. Eine Geschichle des Streits urn die Grundlagen der Disziplin and des S

ISSN:0008-8994    

DOI:10.1111/j.1600-0498.1992.tb00870.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY