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Denis's Ear
The Ear of Dionysius () is a limestone cave carved out of the Temenites hill in the city of Syracuse, Italy, Syracuse, on the island of Sicily in Italy. Its name, given by the painter Caravaggio, Michelangelo da Caravaggio, comes from its similarity in shape to the human ear. The name is also linked to echoes in the cave. Geology The Ear of Dionysius was most likely formed out of an old limestone quarry. It is 23 metres high and extends 65 metres back into the cliff. Horizontally, it bends in an approximate "S" shape; vertically it is tapered at the top like a teardrop. Because of its shape, the Ear has extremely good acoustics, making even a small sound resonance, resonate throughout the cave. Purpose This cave was dug in Greek/Roman times to provide water storage for Syracuse. A narrow tunnel was dug first. This tunnel was widened by digging down and sideways afterwards, giving the cave its unusual shape. The small narrow tunnel is still visible on the top of this artificial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syracuse, Sicily
Syracuse ( ; ; ) is a historic city on the Italian island of Sicily, the capital of the Italian province of Syracuse. The city is notable for its rich Greek and Roman history, culture, amphitheatres, architecture, and as the birthplace and home of the pre-eminent mathematician and engineer Archimedes. This 2,700-year-old city played a key role in ancient times, when it was one of the major powers of the Mediterranean world. Syracuse is located in the southeast corner of the island of Sicily, next to the Gulf of Syracuse beside the Ionian Sea. It is situated in a drastic rise of land with depths being close to the city offshore although the city itself is generally not so hilly in comparison. The city was founded by Ancient Greek Corinthians and Teneans and became a very powerful city-state. Syracuse was allied with Sparta and Corinth and exerted influence over the entirety of Magna Graecia, of which it was the most important city. Described by Cicero as "the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dionysius I Of Syracuse
Dionysius I or Dionysius the Elder ( 432 – 367 BC) was a Greek tyrant of Syracuse, Sicily. He conquered several cities in Sicily and southern Italy, opposed Carthage's influence in Sicily and made Syracuse the most powerful of the Western Greek colonies. He was regarded by the ancients as the worst kind of despot: cruel, suspicious, and vindictive. Endnotes: * Diod. Sic. xiii., xiv., xv. *J. Bass, ''Dionysius I. von Syrakus'' (Vienna, 1881), with full references to authorities in footnotes Early life Dionysius began his working life as a clerk in a public office. Because of his achievements in the war against Carthage that began in 409 BC, he was elected supreme military commander in 406 BC. In the following year he seized total power and became tyrant. He was married to Aristomache, and had a daughter by her, Arete. He was married at the same time to Doris of Locris, who bore him his son, Dionysius II of Syracuse. Rise to power Dionysius seized power with the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archaeological Sites In Sicily
Archaeology or archeology is the study of human activity through the recovery and analysis of material culture. The archaeological record consists of artifacts, architecture, biofacts or ecofacts, sites, and cultural landscapes. Archaeology can be considered both a social science and a branch of the humanities. It is usually considered an independent academic discipline, but may also be classified as part of anthropology (in North America – the four-field approach), history or geography. The discipline involves surveying, excavation, and eventually analysis of data collected, to learn more about the past. In broad scope, archaeology relies on cross-disciplinary research. Archaeologists study human prehistory and history, from the development of the first stone tools at Lomekwi in East Africa 3.3 million years ago up until recent decades. Archaeology is distinct from palaeontology, which is the study of fossil remains. Archaeology is particularly important for learn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock-cut Architecture Of Italy
Rock-cut architecture is the creation of structures, buildings, and sculptures by excavating solid Rock (geology), rock where it naturally occurs. Intensely laborious when using ancient tools and methods, rock-cut architecture was presumably combined with quarrying the rock for use elsewhere. In India and China, the terms ''cave'' and ''cavern'' are often applied to this form of man-made architecture, but caves and caverns that began in natural form are not considered to be rock-cut architecture even if extensively modified. Although rock-cut structures differ from traditionally built structures in many ways, many rock-cut structures are made to replicate the facade or interior of traditional architectural forms. Interiors were usually carved out by starting at the roof of the planned space and then working downward. This technique prevents stones falling on workers below. The three main uses of rock-cut architecture were temples (like those in Indian rock-cut architecture, India), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Caves In Italy
The following article shows a list of caves in Italy. Overview Main concentration of Italian caves (, singular: ''grotta'') is close to the Alps and the Apennine Mountains, principally due to karst. The Italian caves attract around 1.5 million tourists every year. The main Italian tourist caves are Castellana Caves and Frasassi Caves. Other notable show caves are Borgio Verezzi Caves, Castelcivita Caves, Grotta del Cavallone, Grotta Gigante, Grotta di Ispinigoli, Neptune's Grotto, Pastena Caves, Pertosa Caves, Grotta dello Smeraldo and Toirano Caves. Other notable Italian caves are Grotto Calgeron, Ear of Dionysius, Grotta del Gelo, Paglicci Cave, Grotta dell'Addaura, Arene Candide, Fumane Cave, Nereo Cave and Blue Grotto. Caves The caves are listed by alphabetical order and there are shown the main tourist caves and other notable (e.g. archaeological or paleontological) underground voids. Notes and references See also * Grotto *List of caves Extern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Caves
This is a list of caves of the world that have articles or that are properly cited. They are sorted by continent and then country. Caves which are in overseas territories on a different continent than the home country are sorted by the territory's continent and name. Africa Algeria * Aïn Taïba * Anou Achra Lemoun * Anou Boussouil * Anou Ifflis * Anou Timedouine * Gueldaman caves * Ghar Boumâaza (Rivière De La Tafna) * Grotte de Cervantes * Kef Al Kaous Botswana * Gcwihaba * Tsodilo#Rhino Cave, Rhino Cave Cameroon * Gouffre de Mbilibekon * Grottes de Linté * Grotte de Loung * Grotte de Mfouda * Grotte FovuFovu à Baham – Les grottes sacrées des Hautes Terres de L'Ouest Cameroun Grottesducameroun.org. Retrieved 15 September 2011. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indiana Jones And The Dial Of Destiny
''Indiana Jones and the Dial of Destiny'' is a 2023 American action-adventure film directed by James Mangold and written by Mangold, David Koepp, Jez Butterworth, Jez and John-Henry Butterworth. It is the fifth and final installment in Indiana_Jones#Films, the ''Indiana Jones'' film series. Harrison Ford, John Rhys-Davies, and Karen Allen reprise their roles from the previous films, with Phoebe Waller-Bridge, Antonio Banderas, Toby Jones, Boyd Holbrook, Ethann Isidore, and Mads Mikkelsen joining the cast. Set in 1969, the film follows Jones and his estranged goddaughter, Helena, who are trying to locate a Antikythera mechanism, powerful artifact before Dr. Jürgen Voller, a Operation Paperclip, Nazi-turned-NASA scientist, who plans to use it to alter the outcome of World War II. ''Dial of Destiny'' is the only film in the series not directed by Steven Spielberg nor conceived by George Lucas, though both served as executive producers. Plans for a fifth ''Indiana Jones'' film date ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archimedes
Archimedes of Syracuse ( ; ) was an Ancient Greece, Ancient Greek Greek mathematics, mathematician, physicist, engineer, astronomer, and Invention, inventor from the ancient city of Syracuse, Sicily, Syracuse in History of Greek and Hellenistic Sicily, Sicily. Although few details of his life are known, based on his surviving work, he is considered one of the leading scientists in classical antiquity, and one of the greatest mathematicians of all time. Archimedes anticipated modern calculus and mathematical analysis, analysis by applying the concept of the Cavalieri's principle, infinitesimals and the method of exhaustion to derive and rigorously prove many geometry, geometrical theorem, theorems, including the area of a circle, the surface area and volume of a sphere, the area of an ellipse, the area under a parabola, the volume of a segment of a paraboloid of revolution, the volume of a segment of a hyperboloid of revolution, and the area of a spiral. Archimedes' other math ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ear Trumpet
An ear trumpet is a tubular or funnel-shaped device which collects sound waves and leads them into the ear. They are used as hearing aids, resulting in a strengthening of the sound energy impact to the eardrum and thus improved hearing for a deaf or hard-of-hearing individual. Ear trumpets were made of sheet metal, silver, wood, snail shells or animal horns. They have largely been replaced in wealthier areas of the world by modern hearing aid technology that is much smaller and less obtrusive, albeit more expensive. A sound trumpet does not "amplify" sound. It takes the sound power received over a large area and concentrates it into a smaller area. The received sound is louder, but no power has been created in the process. History The use of ear trumpets for the partially deaf dates back to the 17th century.Howard, Alexander. "Hearing Aids: Smaller and Smarter." New York Times, November 26, 1998. The earliest description of an ear trumpet was given by the French Jesuit priest an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vincenzo Mirabella
Vincenzo Mirabella Alagona (Syracuse, Sicily 1570 - Modica, 1624) was an Italian historian, archaeologist and architect, best known for his work ''Plans of Ancient Syracuse''. Family life Vincenzo Mirabella, son of Michele Mirabella and Giovanna Alagona, was born into a patrician family of French origin which had moved to Sicily in the early fourteenth century. As a young man he dedicated himself to the study of Greek, Latin and Italian literature as well as mathematics, music, history and poetry. He played an active part in civic life, holding office as ''magister nundinarum'' (Master of the Assizes) in 1593, Treasurer of the University in 1613-14 and Jurat, the highest office in the city, in 1616-17. He married Lucrezia Platamone, daughter of Antonio and Giovanna Zumbo, who brought him a substantial dowry and further connections to the leading families of Syracuse. He does not appear to have had any children with her. He lived in a house in Syracuse in front of the Church of S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Resonance
Resonance is a phenomenon that occurs when an object or system is subjected to an external force or vibration whose frequency matches a resonant frequency (or resonance frequency) of the system, defined as a frequency that generates a maximum amplitude response in the system. When this happens, the object or system absorbs energy from the external force and starts vibrating with a larger amplitude. Resonance can occur in various systems, such as mechanical, electrical, or acoustic systems, and it is often desirable in certain applications, such as musical instruments or radio receivers. However, resonance can also be detrimental, leading to excessive vibrations or even structural failure in some cases. All systems, including molecular systems and particles, tend to vibrate at a natural frequency depending upon their structure; when there is very little damping this frequency is approximately equal to, but slightly above, the resonant frequency. When an Oscillation, oscillat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Province Of Syracuse
The province of Syracuse (; ) was a Provinces of Italy, province in the autonomous island region of Sicily, Italy. Its capital was the city of Syracuse, Sicily, Syracuse, a town established by Greeks, Greek colonists arriving from Corinth in the 8th century BC. It had an area of and a total population of 403,985 (2016). Syracuse had 8% of the Sicilian population and 8.2% of Sicily's area. Following the suppression of the Sicilian provinces, it was replaced in August 2015 by the free municipal consortium of Syracuse (). Geography and heritage The province of Syracuse lies in the southeastern Sicily, in southwestern Italy. It is bordered to the north and north-west by the province of Catania to the west by the province of Ragusa, and to the east and south by the Ionian and Mediterranean seas. It occupies an area of . In 2002, ancient centres of Noto, Palazzolo Acreide and six other towns in the Noto Valley, were awarded UNESCO World Heritage Site status, and is a significant attr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
