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  • Does it favor a Heliocentric, or Geocentric Universe? | The Antikythera Mechanism Research Project
    he starts the indicated computation which involves a circle that Saturn is travelling along the ecliptic and an epicycle which proportions to the size of Earth s orbit and arrives at the location He knows where to look 1500 years later his English descendant John Astronomer needs the same information His friend Kepler has not yet let him into his new secret about orbits but John is none the less a modern fellow so he uses the new fangled celestial mechanics as Tycho Brahe taught him he determines his location on Earth translates and rotates that into a solar centered coordinate system and then applies the six orbital variables of Saturn and derives the location in his sky Both got an equally close answer because both of their methods were the same The two epicycles of Ptolomy and the two orbits of Copernicus equate to the same computations perhaps ordered differently and certainly different in viewpoint and technique but in essence the same The upshot is that the two theories which explain who moves around whom are not relevant to the Antikythera Mechanism it uses a mechanical equivalent which could be explained by either Ιον or John in terms of epicycles or celestial mechanics Until Kepler expands the universe of the mind to include all conics as orbits the two are entirely equivalent to the problem that these two have and which the Antikythera Mechanism addresses Login or register to post comments Irrelevance of heliocentric model in antiquity Submitted by ilan vardi on Fri 04 07 2014 19 51 The object of the mechanism is to make specific astronomical predictions This requires a geocentric model since actual observations require everything to turn around the observer think of the coordinates you use to point your telescope In fact there is a

    Original URL path: http://www.antikythera-mechanism.gr/faq/astronomical-questions/heliocentric-or-geocentric-universe (2016-02-11)
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  • What does it tell us about Greek Astronomy? | The Antikythera Mechanism Research Project
    and discovered the repetitive patterns in that data The Greeks placed these data into a new perspective As an indication of the astronomical knowledge represented by the Mechanism consider the FAQs regarding the Metonic Callipic Saros and Exeligmos Cycles Bookmark Search this post with Google Plus One Pinterest Login or register to post comments Français Tags Astronomical questions Confirmation of known results and Ancient Greek practicality Submitted by ilan vardi on Tue 01 10 2013 13 36 The Antikythera mechanism confirms that our previous understanding of Ancient Greek science was correct Moreover in actually implementing their knowledge by building a machine they have proved their knowledge to quote Donald Knuth Science is what we understand well enough to explain to a computer It also confirms the fact that contrary to the popular misconception Ancient Greeks scientists were very practical and did not limit themselves to theoretical investigation To the surprise of the academic community this misconception was strongly refuted when Archimedes The Method was discovered in 1906 by Heiberg in which Archimedes states that he systematically used physical analogies to discover his mathematical theorems However after a century this more realistic understanding of Ancient Greek science has had a difficult

    Original URL path: http://www.antikythera-mechanism.gr/faq/astronomical-questions/about-greek-astronomy (2016-02-11)
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  • Problems with a Solid Model | The Antikythera Mechanism Research Project
    gear up the planets to get retrograde motion Any ideas on how that could work Thanks Dissertation Login or register to post comments Tags General Forum Contact Michael Wright Submitted by Antikythera Mec on Fri 15 07 2011 01 19 We recommend you contact Michael Wright through his contact form at http www antikythera mechanism gr user 25 contact only for registered and logged in users emails remain private He

    Original URL path: http://www.antikythera-mechanism.gr/node/578 (2016-02-11)
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  • Recent comments | The Antikythera Mechanism Research Project
    actual observations require everything to turn around the observer think of the coordinates you use to point your telescope In fact there is a slight discrepancy since the observer is not at the center of the Earth which is the actual center of the geocentric model but this was already taken into account in antiquity and was estimated by Archimedes in his paper The Sand Reckoner The geocentric heliocentric debate is more of a conceptual issue as geocentric will eventually be required for observations Moreover until the 17th century astronomy was mathematical astronomy in which one constructs the best model fitting the data without giving physical reasons why the model occurs in nature Since the geocentric and heliocentric models are mathematically equivalent the distinction is once again moot Moreover the heliocentric theory certainly didn t have any observational support at the time experimental verification only came in 1838 and it loses conceptual significance without physical explanations such as gravitation and Newton s Laws Therefore there was no scientific reason to adopt a heliocentric model in antiquity The only exception is Archimedes who did adopt it in his paper The Sand Reckoner because he wanted to use the largest theoretical model of the universe which is the case for the heliocentric model in order to avoid parallax issues He was never persecuted for this view and there is no evidence that anyone supporting the heliocentric model was ever persecuted in Ancient Greece Reply to What does it tell us about Greek Astronomy 2 years 18 weeks ago Confirmation of known results and Ancient Greek practicality The Antikythera mechanism confirms that our previous understanding of Ancient Greek science was correct Moreover in actually implementing their knowledge by building a machine they have proved their knowledge to quote Donald Knuth Science is what we understand well enough to explain to a computer It also confirms the fact that contrary to the popular misconception Ancient Greeks scientists were very practical and did not limit themselves to theoretical investigation To the surprise of the academic community this misconception was strongly refuted when Archimedes The Method was discovered in 1906 by Heiberg in which Archimedes states that he systematically used physical analogies to discover his mathematical theorems However after a century this more realistic understanding of Ancient Greek science has had a difficult time entering the public consciousness The fame of the Antikythera mechanism is therefore an important step in the general realization that Ancient Greeks had a very similar scientific process to our own Reply to What are the Metonic and Callipic Cycles 2 years 18 weeks ago A simple explanation of the Metonic cycle The current western Gregorian calendar corresponds to the return of the seasons In other words if you give a date of the year and a location then you should have a good idea of the weather For example in Europe July is hot and January is cold However our months do not represent any physical phenomenon knowing the day of

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  • Acknowledgments | The Antikythera Mechanism Research Project
    its generous support the Project would still be in its infancy The Walter Hudson Bequest the University of Athens Research Committee the National Bank of Greece and its Cultural Foundation in particular its Director Dionysis Kapsalis all played a pivotal role in the success of the Project Complete credits about funding and financial support are here The support of the Hellenic Ministry of Culture in particular Petros Tatoulis former Deputy Minister was invaluable We also acknowledge essential support from the National Archaeological Museum in Athens Nikolaos Kaltsas Director Rosa Proskinitopoulou Deputy Director Head of Bronze Section We acknowledge the generous support of the staff of the National Archaeological Museum and of X Tek Systems The Athens International Conference was supported by the National Bank of Greece The French Embassy French Institute in Athens contributed to the organisation of Session 3 of the Conference Special thanks to the Athens Traffic Police for their assistance in conveying X Tek Systems eight tonne x ray machine to and from the National Archaeological Museum Finally we acknowledge help and advice from Alex Abravanel Stella and Eftichios Alfieris Janet Ambers Hazel Forsyth Ian Freestone Emmanuel Georgoudakis Dimitris Gogos Robert Halleux Theofanis Hatzigrivas Velson Horie Alexander Jones Mark Jones Herb Johnson Panaghiotis Kipouros Haralambos Kritzas Josef Lossl Dionysios Mouzakis Efthymios Nicolaidis Eftichis Papadopetrakis George Simantonis Ioanna Soufleri Christos Stathakopoulos Ioannis Theofanidis Lefteris Tsavliris Harry Tzalas Alexandros Valassopoulos Ruth Westgate Tim Whiteside and Angelos Xenos Since 2006 and especially 2008 with the second publication of the research results in Nature there are numerous activities around the Antikythera Mechanism and more people involved in complex events like congresses exhibitions films etc We will try to credit them in the list below always in alphabetical order We acknowledge help and advice from Yiorgos Anomeritis Rea Apostolides Madeleine Avramoussis Jean

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  • The Project | The Antikythera Mechanism Research Project
    the function and significance of the Antikythera Mechanism For details please read An overview of the Antikythera Mechanism Research Project A list of the institutions involved in the research project Details about the people involved in the research project The list of publications of the Research Project with links to article descriptions and full texts when available See also Credits details on funding and sponsorship Acknowledgments about the people involved

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  • Πρόγραμμα | Πρόγραμμα Μελέτης Μηχανισμού Αντικυθήρων
    της σημασίας του Μηχανισμού των Αντικυθήρων Δείτε Την παρουσίαση του Προγράμματος Στα Αγγλικά τα Ιδρύματα που συμμετέχουν στην έρευνα Στα Αγγλικά λεπτομέρειες για τα άτομα που συμμετέχουν στην έρευνα Στα Αγγλικά η λίστα των δημοσιεύσεων της Ομάδας Έρευνας με συνδέσμους προς τις περιλήψεις και τα πλήρη κείμενα όταν είναι διαθέσιμα Λεπτομέρειες για την υποστήριξη και τη χρηματοδότηση Bookmark Search this post with Google Plus One Pinterest English Tweets by antikytheradive

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  • Frequently Asked Questions - Astronomical questions | The Antikythera Mechanism Research Project
    to the history of Astronomy and the periods displayed on the Antikythera Mechanism What does it tell us about Greek Astronomy Does it favor a Heliocentric or Geocentric Universe What is a Parapegma What are the Sidereal Synodic Tropical Anomalistic and Draconic months What are the Metonic and Callipic Cycles What are the Saros and Exeligmos cycles What are the Lower Back Dials Glyphs What is the Sothic year Tweets

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