|
Greek Engineering
Ancient Greek technology developed during the 5th century BC, continuing up to and including the Roman period, and beyond. Inventions that are credited to the ancient Greeks include the gear, screw, rotary mills, bronze casting techniques, water clock, water organ, the torsion catapult, the use of steam to operate some experimental machines and toys, and a chart to find prime numbers. Many of these inventions occurred late in the Greek period, often inspired by the need to improve weapons and tactics in war. However, peaceful uses are shown by their early development of the watermill, a device which pointed to further exploitation on a large scale under the Romans. They developed surveying and mathematics to an advanced state, and many of their technical advances were published by philosophers, like Archimedes and Heron of Alexandria, Heron. Water technology Some fields that were encompassed in the area of water resources (mainly for urban use) included groundwater exploitation, c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roda De Vitruvi
Roda may refer to: Places *Stadtroda (called Roda until 1925), a town in Thuringia, Germany *Roda, Greece, a village in Corfu, Greece * Roda, Punjab, a town and Union Council of Punjab, Pakistan *Roda, Portugal, a village in Viseu district, Portugal *Roda de Berà, a municipality in Catalonia, Spain * Roda de Eresma, a municipality in Castile and León, Spain *Roda de Isábena, a town in Aragon, Spain *Roda de Ter, a municipality in Catalonia, Spain *La Roda, a small city in Castile-La Mancha, Spain *Roda, Virginia, an unincorporated community in Wise County, Virginia, USA *Roda Group of Temples in Gujarat, India *Roda Island, an island in Cairo, Egypt People *Roda (name) Sports *Roda '46, a football club in Leusden, Netherlands *Roda JC, a football club in Kerkrade, Netherlands *FC Roda Moscow, a football club in Moscow, Russia Other uses *Roda (formation), an Afro-Brazilian form of dancing events *Roda (megamarkets), a retail chain in Serbia *Roda (river), a river in Thuringi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cistern
A cistern (Middle English ', from Latin ', from ', "box", from Greek ', "basket") is a waterproof receptacle for holding liquids, usually water. Cisterns are often built to catch and store rainwater. Cisterns are distinguished from wells by their waterproof linings. Modern cisterns range in capacity from a few litres to thousands of cubic metres, effectively forming covered reservoirs. Origins Early domestic and agricultural use Waterproof lime plaster cisterns in the floors of houses are features of Neolithic village sites of the Levant at, for instance, Ramad and Lebwe, and by the late fourth millennium BC, as at Jawa in northeastern Lebanon, cisterns are essential elements of emerging water management techniques in dry-land farming communities. The Ancient Roman impluvium, a standard feature of the domus house, generally had a cistern underneath. The impluvium and associated structures collected, filtered, cooled, and stored the water, and also cooled and ventilated ... [...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] |
Differential (mechanical Device)
A differential is a gear train with three drive shafts that has the property that the rotational speed of one shaft is the average of the speeds of the others, or a fixed multiple of that average. Functional description The following description of a differential applies to a traditional rear-wheel-drive car or truck with an open or limited slip differential combined with a reduction gearset using bevel gears (these are not strictly necessary; see spur-gear differential): Thus, for example, if the car is making a turn to the right, the main ring gear may make 10 full rotations. During that time, the left wheel will make more rotations because it has farther to travel, and the right wheel will make fewer rotations as it has less distance to travel. The sun gears (which drive the axle half-shafts) will rotate at different speeds relative to the ring gear (one faster, one slower) by, say, 2 full turns each (4 full turns relative to each other), resulting in the left wheel mak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diolkos
The Diolkos (, from the Greek , "across", and , "portage machine") was a paved trackway near Corinth in Ancient Greece which enabled boats to be moved overland across the Isthmus of Corinth. The shortcut allowed ancient vessels to avoid the long and dangerous circumnavigation of the Peloponnese peninsula. The phrase "as fast as a Corinthian", penned by the comic playwright Aristophanes, indicates that the trackway was common knowledge and had acquired a reputation for swiftness. The main function of the Diolkos was the transfer of goods, although in times of war it also became a preferred means of speeding up naval campaigns. The to long roadway was a rudimentary form of railway, and operated from c. 600 BC until the middle of the 1st century AD.; ; ; ; The Diolkos combined the two principles of the railway and the overland transport of ships, on a scale that remained unique in antiquity. Function The Diolkos saved ships sailing from the Ionian Sea to the Ae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Babylonian Map Of The World
The Babylonian Map of the World (or ''Imago Mundi'') is a Babylonian clay tablet written in the Akkadian language. Dated to no earlier than the 9th century BC (with a late 8th or 7th date being more likely), it includes a brief and partially lost textual description. The tablet describes the oldest known depiction of the known world. Ever since its discovery there have been a variety of divergent views on what it represents in general and about specific features in particular. The map is centered on the Euphrates, flowing from the north (top) to the south (bottom). The city of Babylon is shown on the Euphrates, in the northern half of the map. The mouth of the Euphrates is labelled "swamp" and "outflow". Susa, the capital of Elam, is shown to the south, Urartu to the northeast, and Habban, the capital of the Kassites is shown (incorrectly) to the northwest. Mesopotamia is surrounded by a circular "bitter river" or Ocean, and seven or eight "regions", depicted as triangular sect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anaximander
Anaximander (; grc-gre, Ἀναξίμανδρος ''Anaximandros''; ) was a pre-Socratic Greek philosopher who lived in Miletus,"Anaximander" in ''Chambers's Encyclopædia''. London: George Newnes, 1961, Vol. 1, p. 403. a city of Ionia (in modern-day Turkey). He belonged to the Milesian school and learned the teachings of his master Thales. He succeeded Thales and became the second master of that school where he counted Anaximenes and, arguably, Pythagoras amongst his pupils. Little of his life and work is known today. According to available historical documents, he is the first philosopher known to have written down his studies, although only one fragment of his work remains. Fragmentary testimonies found in documents after his death provide a portrait of the man. Anaximander was an early proponent of science and tried to observe and explain different aspects of the universe, with a particular interest in its origins, claiming that nature is ruled by laws, just like human soc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cartography
Cartography (; from grc, χάρτης , "papyrus, sheet of paper, map"; and , "write") is the study and practice of making and using maps. Combining science, aesthetics and technique, cartography builds on the premise that reality (or an imagined reality) can be modeled in ways that communicate spatial information effectively. The fundamental objectives of traditional cartography are to: * Set the map's agenda and select traits of the object to be mapped. This is the concern of map editing. Traits may be physical, such as roads or land masses, or may be abstract, such as toponyms or political boundaries. * Represent the terrain of the mapped object on flat media. This is the concern of map projections. * Eliminate characteristics of the mapped object that are not relevant to the map's purpose. This is the concern of generalization. * Reduce the complexity of the characteristics that will be mapped. This is also the concern of generalization. * Orchestrate the elements of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greek Street - III Century BC - Porta Rosa - Velia - Italy
Greek may refer to: Greece Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group. *Greek language, a branch of the Indo-European language family. **Proto-Greek language, the assumed last common ancestor of all known varieties of Greek. **Mycenaean Greek, most ancient attested form of the language (16th to 11th centuries BC). **Ancient Greek, forms of the language used c. 1000–330 BC. **Koine Greek, common form of Greek spoken and written during Classical antiquity. **Medieval Greek or Byzantine Language, language used between the Middle Ages and the Ottoman conquest of Constantinople. **Modern Greek, varieties spoken in the modern era (from 1453 AD). *Greek alphabet, script used to write the Greek language. *Greek Orthodox Church, several Churches of the Eastern Orthodox Church. *Ancient Greece, the ancient civilization before the end of Antiquity. *Old Greek, the language as spoken from Late Antiquity to around 1500 AD. Other uses * '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Velia
, alternate_name = Hyele, Ele, Elea , image = Velia Excavation and Tower.jpg , alt = , caption = View of the excavations and the tower at Velia , map_type = Italy , map_alt = , map_size = , relief = , coordinates = , location = Velia, Province of Salerno, Campania, Italy , region = Magna Graecia , type = Settlement , part_of = , length = , width = , area = , height = , builder = Settlers from Phocaea , material = , built = Between 538 and 535 BC , abandoned = , epochs = , cultures = , dependency_of = , occupants = Parmenides, Zeno, Statius , event = , excavations = , archaeologists = , condition = , ownership = , management = Soprintendenza per i Beni Archeologici di Salerno, Avellino, Benevento e Caserta , public_access = , website Parco archeologico di Elea-Velia , notes = Velia was the Roman name of an ancient city of Magna Graecia on the coast of the Tyrrhenian Sea. It was founded by Greeks from Phocaea as Hyele ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
