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John Hugh Seiradakis
John Seiradakis (Greek: Ιωάννης-Χιου Σειραδάκης; 5 March 1948 – 3 May 2020) was a Greek astronomer and professor emeritus at the Department of Physics of the Aristotle University of Thessaloniki. He is best known for his contributions in the understanding of radio pulsars, the Galactic Center and archaeoastronomy. Since the early 2000s he was heavily involved in the decoding of the Antikythera mechanism. He was a founding member of the Hellenic Astronomical Society, the European Astronomical Society and the International Olympiad on Astronomy and Astrophysics (IOAA). Personal life John Seiradakis was born in Chania, Crete, Greece, on 5 March 1948 to Mercy Burdett Money-Coutts Seiradaki and Michael Seiradakis. His mother was a British archaeologist. He had a younger sister, Sophia Hester Seiradaki. He completed his primary education, as well as two years of high school in Chania. In 1966 his family moved to Athens so he finished the last four grades of high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chania
Chania ( el, Χανιά ; vec, La Canea), also spelled Hania, is a city in Greece and the capital of the Chania regional unit. It lies along the north west coast of the island Crete, about west of Rethymno and west of Heraklion. The municipality has 108,642 inhabitants (2011). This consists of the city of Chania and several nearby areas, including Kounoupidiana (pop. 8,620), Mournies (pop. 7,614), Souda (pop. 6,418), Nerokouros (pop. 5,531), Daratsos (pop. 4,732), Perivolia (pop. 3,986), Galatas (pop. 3,166) and Aroni (pop. 3,003). History Early history Chania is the site of the Minoan settlement the Greeks called Kydonia, the source of the word quince. It appears on Linear B as ''ku-do-ni-ja''. Some notable archaeological evidence for the existence of this Minoan city below some parts of today's Chania was found by excavations in the district of Kasteli in the Old Town. This area appears to have been inhabited since the Neolithic era. The city reemerged after the end ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greece
Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, and Turkey to the northeast. The Aegean Sea lies to the east of the Geography of Greece, mainland, the Ionian Sea to the west, and the Sea of Crete and the Mediterranean Sea to the south. Greece has the longest coastline on the Mediterranean Basin, featuring List of islands of Greece, thousands of islands. The country consists of nine Geographic regions of Greece, traditional geographic regions, and has a population of approximately 10.4 million. Athens is the nation's capital and List of cities and towns in Greece, largest city, followed by Thessaloniki and Patras. Greece is considered the cradle of Western culture, Western civilization, being the birthplace of Athenian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercy Seiradaki
:''Note: In the Greek language Seiradaki is the customary last name for a woman married to someone called Seiradakis. More information here.'' Mercy Seiradaki (''née'' Money-Coutts; 16 April 1910 – 1 September 1993) was a British archaeologist who worked in Crete in the 1930s, mostly on projects led by John Pendlebury, including excavations at Knossos. She co-authored several reports on the work undertaken with him and published a later key text on the pottery from Karphi in 1960. During the war she worked at Bletchley Park, and then joined the Red Cross. She worked with the United Nations Relief and Rehabilitation Administration (UNRRA) in Crete in the post-war years and lived in Greece for the rest of her life. Personal life Mercy Burdett Money-Coutts was born on 16 April 1910 in Devon into an upper-class family, the only daughter of Hester Frances ''née'' Russell and Hugh Burdett Money-Coutts, later Baron Latymer. Unsurprisingly for a girl of her background, she was priv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crete
Crete ( el, Κρήτη, translit=, Modern: , Ancient: ) is the largest and most populous of the Greek islands, the 88th largest island in the world and the fifth largest island in the Mediterranean Sea, after Sicily, Sardinia, Cyprus, and Corsica. Crete rests about south of the Greek mainland, and about southwest of Anatolia. Crete has an area of and a coastline of 1,046 km (650 mi). It bounds the southern border of the Aegean Sea, with the Sea of Crete (or North Cretan Sea) to the north and the Libyan Sea (or South Cretan Sea) to the south. Crete and a number of islands and islets that surround it constitute the Region of Crete ( el, Περιφέρεια Κρήτης, links=no), which is the southernmost of the 13 top-level administrative units of Greece, and the fifth most populous of Greece's regions. Its capital and largest city is Heraklion, on the north shore of the island. , the region had a population of 636,504. The Dodecanese are located to the no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Olympiad On Astronomy And Astrophysics
The International Olympiad on Astronomy and Astrophysics (IOAA) is an annual Astronomy and Astrophysics competition for high school students. It is one of the international science olympiads. The Olympiad was founded from a dissidence inside the International Astronomy Olympiad, in order to increase the scope of the organization. The first IOAA was held in Chiang Mai, Thailand, in November/December 2007. History The first Olympiad was held in the city of Chiang Mai (Thailand) from November 30 to December 9, 2007. The International Council, consisting of team leaders, elected a president (Dr. Boonrucksar Soonthornthum, Thailand) and a secretary general (Dr. Chatief Kunjaya, Indonesia) for a five-year term. The second Olympiad was held in 2008, from August 19 to 28, in the city of Bandung (Indonesia). It was attended by representatives of 22 countries. The third Olympiad was held in 2009, from October 17 to 27, in Tehran. An observation tour was conducted in the desert. Repre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Astronomical Society
The European Astronomical Society (EAS) is a learned society, founded under the Swiss Civil Code in 1990, as an association to contribute and promote the advancement of astronomy in Europe, and to deal with astronomical matters at a European level. It is a society of individual professional astronomers, and all European astronomers can be members independently of their field of work or country of work or origin. The society offers a forum for discussion on all aspects of astronomical development in Europe, and is the organisation that represents the interests of astronomers in discussions of European-wide developments. Maarten Baes (Belgium) serves as the ''EAS Newsletter'' editor. Presidents The President of the European Astronomical Society chairs the governing Council of the EAS and liaises with similar societies in countries around the world, and with the International Astronomical Union on behalf of the European astronomy community. The first person to hold the title of Pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hellenic Astronomical Society
The Hellenic Astronomical Society (Hel.A.S.), in greek Ελληνική Αστρονομική Εταιρεία (ΕΛ.ΑΣ.ΕΤ.), is a scientific non profit society of professional astronomers in Greece. Its formal headquarters are at the Dept. of Physics of the University of Athens. The main goal of the Society is to advance the research in astronomy, astrophysics and space physics, as well as to support all educational astronomical activities. As is typical for scientific societies it consists of ordinary members, who have a PhD degree in astrophysics and closely related fields, as well as junior and associate members. History Hel.A.S. was formally founded on May 25, 1993. John Hugh Seiradakis, professor of astronomy at the University of Thessaloniki, was the driving force in drafting the constitution of the Society, with the support from Dr. D. Sinachopoulos and Profs. S. Avgoloupis, V. Barbanis, S. Persides, N. Spyrou and H. Varvoglis. The final form of the constitution was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antikythera Mechanism
The Antikythera mechanism ( ) is an Ancient Greece, Ancient Greek hand-powered orrery, described as the oldest example of an analogue computer used to predict astronomy, astronomical positions and eclipses decades in advance. It could also be used to track the four-year cycle of athletic games which was similar to an Olympiad, the cycle of the ancient Olympic Games. This artefact was among wreckage retrieved from a Antikythera wreck, shipwreck off the coast of the Greek island Antikythera in 1901. On 17 May 1902, it was identified as containing a gear by archaeologist Valerios Stais. The device, housed in the remains of a wooden-framed case of (uncertain) overall size , was found as one lump, later separated into three main fragments which are now divided into 82 separate fragments after conservation efforts. Four of these fragments contain gears, while inscriptions are found on many others. The largest gear is approximately in diameter and originally had 223 teeth. In 2008, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archaeoastronomy
Archaeoastronomy (also spelled archeoastronomy) is the interdisciplinary or multidisciplinary study of how people in the past "have understood the phenomena in the sky, how they used these phenomena and what role the sky played in their cultures". Clive Ruggles argues it is misleading to consider archaeoastronomy to be the study of ancient astronomy, as modern astronomy is a scientific discipline, while archaeoastronomy considers symbolically rich cultural interpretations of phenomena in the sky by other cultures. It is often twinned with ''ethnoastronomy'', the anthropological study of skywatching in contemporary societies. Archaeoastronomy is also closely associated with historical astronomy, the use of historical records of heavenly events to answer astronomical problems and the history of astronomy, which uses written records to evaluate past astronomical practice. Archaeoastronomy uses a variety of methods to uncover evidence of past practices including archaeology, anth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Pulsars
A pulsar (from ''pulsating radio source'') is a highly magnetized rotating neutron star that emits beams of electromagnetic radiation out of its magnetic poles. This radiation can be observed only when a beam of emission is pointing toward Earth (similar to the way a lighthouse can be seen only when the light is pointed in the direction of an observer), and is responsible for the pulsed appearance of emission. Neutron stars are very dense and have short, regular rotational periods. This produces a very precise interval between pulses that ranges from milliseconds to seconds for an individual pulsar. Pulsars are one of the candidates for the source of ultra-high-energy cosmic rays. (See also centrifugal mechanism of acceleration.) The periods of pulsars make them very useful tools for astronomers. Observations of a pulsar in a binary neutron star system were used to indirectly confirm the existence of gravitational radiation. The first extrasolar planets were discovered aroun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aristotle University Of Thessaloniki
Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher and polymath during the Classical period in Ancient Greece. Taught by Plato, he was the founder of the Peripatetic school of philosophy within the Lyceum and the wider Aristotelian tradition. His writings cover many subjects including physics, biology, zoology, metaphysics, logic, ethics, aesthetics, poetry, theatre, music, rhetoric, psychology, linguistics, economics, politics, meteorology, geology, and government. Aristotle provided a complex synthesis of the various philosophies existing prior to him. It was above all from his teachings that the West inherited its intellectual lexicon, as well as problems and methods of inquiry. As a result, his philosophy has exerted a unique influence on almost every form of knowledge in the West and it continues to be a subject of contemporary philosophical discussion. Little is known about his life. Aristotle was born in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greek Language
Greek ( el, label=Modern Greek, Ελληνικά, Elliniká, ; grc, Ἑλληνική, Hellēnikḗ) is an independent branch of the Indo-European family of languages, native to Greece, Cyprus, southern Italy (Calabria and Salento), southern Albania, and other regions of the Balkans, the Black Sea coast, Asia Minor, and the Eastern Mediterranean. It has the longest documented history of any Indo-European language, spanning at least 3,400 years of written records. Its writing system is the Greek alphabet, which has been used for approximately 2,800 years; previously, Greek was recorded in writing systems such as Linear B and the Cypriot syllabary. The alphabet arose from the Phoenician script and was in turn the basis of the Latin, Cyrillic, Armenian, Coptic, Gothic, and many other writing systems. The Greek language holds a very important place in the history of the Western world. Beginning with the epics of Homer, ancient Greek literature includes many works of lasting impo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
