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Ballistae
The ballista (Latin, from Greek βαλλίστρα ''ballistra'' and that from βάλλω ''ballō'', "throw"), plural ballistae, sometimes called bolt thrower, was an ancient missile weapon that launched either bolts or stones at a distant target. Developed from earlier Greek weapons, it relied upon different mechanics, using two levers with torsion springs instead of a tension prod (the bow part of a modern crossbow). The springs consisted of several loops of twisted skeins. Early versions projected heavy darts or spherical stone projectiles of various sizes for siege warfare. It developed into a smaller precision weapon, the '' scorpio'', and possibly the ''polybolos''. Greek weapon The early ballistae in Ancient Greece were developed from two weapons called oxybeles and gastraphetes. The gastraphetes ('belly-bow') was a handheld crossbow. It had a composite prod and was spanned by bracing the front end of the weapon against the ground while placing the end of a slider ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballista (PSF) Vector
The ballista (Latin, from Greek βαλλίστρα ''ballistra'' and that from βάλλω ''ballō'', "throw"), plural ballistae, sometimes called bolt thrower, was an ancient missile weapon that launched either bolts or stones at a distant target. Developed from earlier Greek weapons, it relied upon different mechanics, using two levers with torsion springs instead of a tension prod (the bow part of a modern crossbow). The springs consisted of several loops of twisted skeins. Early versions projected heavy darts or spherical stone projectiles of various sizes for siege warfare. It developed into a smaller precision weapon, the '' scorpio'', and possibly the ''polybolos''. Greek weapon The early ballistae in Ancient Greece were developed from two weapons called oxybeles and gastraphetes. The gastraphetes ('belly-bow') was a handheld crossbow. It had a composite prod and was spanned by bracing the front end of the weapon against the ground while placing the end of a slider ... [...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, in 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 an example of 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 of Dionysius the Elder 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 Dionysiu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roman Republic
The Roman Republic ( la, Res publica Romana ) was a form of government of Rome and the era of the classical Roman civilization when it was run through public representation of the Roman people. Beginning with the overthrow of the Roman Kingdom (traditionally dated to 509 BC) and ending in 27 BC with the establishment of the Roman Empire, Rome's control rapidly expanded during this period—from the city's immediate surroundings to hegemony over the entire Mediterranean world. Roman society under the Republic was primarily a cultural mix of Latin and Etruscan societies, as well as of Sabine, Oscan, and Greek cultural elements, which is especially visible in the Roman Pantheon. Its political organization developed, at around the same time as direct democracy in Ancient Greece, with collective and annual magistracies, overseen by a senate. The top magistrates were the two consuls, who had an extensive range of executive, legislative, judicial, military, and religious powers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
047 Conrad Cichorius, Die Reliefs Der Traianssäule, Tafel XLVII (Ausschnitt 02)
47, 47 or forty-seven may refer to: *47 (number) *47 BC *AD 47 *1947 * 2047 *'47 (brand), an American clothing brand * ''47'' (magazine), an American publication * 47 (song), a song by Sidhu Moose Wala *47, a song by New Found Glory from the album ''Not Without a Fight'' *"Forty Seven", a song by Karma to Burn from the album '' V'', 2011 * +47, the international calling code for Norway *4seven, a television channel *Agent 47, protagonist of the ''Hitman'' video game series *''47'', a young adult novel by Walter Mosley See also * List of highways numbered 47 * Channel 47 (other) * M47 (other), including "Model 47" (M47) * Forty-seven Ronin (other) * A47 (other) A47 may refer to: * Queen's Indian Defense, ''Encyclopaedia of Chess Openings'' code * Focke-Wulf A.47, a meteorological aircraft developed in Germany in 1931 ; roads * A47 road, a road connecting Birmingham and Lowestoft in England ... * Capital Steez {{number disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bal BBC1
Bal may refer to: * Bal (surname), a Dutch, Indian, and Turkish surname * Bal, Iran (other) * Bal, Zira, a village in Punjab, India * ''Bal'' (film), a 2010 Turkish film * Bäl, a settlement on the Swedish island of Gotland * 8678 Bäl, a main belt asteroid * Bal, Cornish for mine, as in Bal maiden * A ground-launched version of the Russian Kh-35 anti-ship missile * A slang term for Balboa (dance) * Balboa High School (California), San Francisco, US People with the given name * Bal Bahadur K.C. (born 1953), Nepali politician * Bal Dani (1933–1999), Indian cricketer * Bal David (born 1972), Filipino basketball player * Bal Dhuri, Indian theatre actor * Bal Dixit, American businessman * Bal Gosal (born 1960), Canadian politician * Bal Kadbet (1925–2010), Indian cricketer * Bal Kudtarkar, Indian radio personality * Bal Narsingh Kunwar (1783–1841), Nepalese Kaji and governor * Bal Gopal Maharjan, Nepali football coach * Bal Chandra Misra, Indian politician * Bal Ram ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hecht 090710 Ballista
Hecht may refer to: * Hecht (surname) * Hecht, a pop rock band from Lucerne, Switzerland. * Hecht's, a chain of department stores, also known as Hecht Brothers, Hecht Bros. and the Hecht Company * Hecht Museum at Haifa University in Israel * ''Hecht'' (submarine), a German World War II two-person submarine * Wolf pack Hecht ("Pike"), a group of German World War II U-boats * Hecht is a gymnastics dismount skill performed on the horizontal bar or uneven bars * Hecht vault, a type of vault Vault may refer to: * Jumping, the act of propelling oneself upwards Architecture * Vault (architecture), an arched form above an enclosed space * Bank vault, a reinforced room or compartment where valuables are stored * Burial vault (enclosure ... in gymnastics See also * Justice Hecht (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Universal Joint
A universal joint (also called a universal coupling or U-joint) is a joint or coupling connecting rigid shafts whose axes are inclined to each other. It is commonly used in shafts that transmit rotary motion. It consists of a pair of hinges located close together, oriented at 90° to each other, connected by a cross shaft. The universal joint is not a constant-velocity joint. U-joints are also sometimes called by various eponymous names, as follows: * Cardan joint, after Gerolamo Cardano, a polymath of the 16th century who contributed to knowledge of various clever mechanisms, including gimbals * Hooke joint or Hooke's joint, after Robert Hooke, a polymath of the 17th century who contributed to knowledge of various clever mechanisms * Spicer joint, after Clarence W. Spicer and the Spicer Manufacturing Company, who manufactured U joints * Hardy Spicer joint, after the Hardy Spicer brand, a successor to the Spicer brand History The main concept of the universal joint is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second Punic War
The Second Punic War (218 to 201 BC) was the second of three wars fought between Carthage and Rome, the two main powers of the western Mediterranean in the 3rd century BC. For 17 years the two states struggled for supremacy, primarily in Italy and Iberia, but also on the islands of Sicily and Sardinia and, towards the end of the war, in North Africa. After immense materiel and human losses on both sides the Carthaginians were defeated. Macedonia, Syracuse and several Numidian kingdoms were drawn into the fighting, and Iberian and Gallic forces fought on both sides. There were three main military theatres during the war: Italy, where Hannibal defeated the Roman legions repeatedly, with occasional subsidiary campaigns in Sicily, Sardinia and Greece; Iberia, where Hasdrubal, a younger brother of Hannibal, defended the Carthaginian colonial cities with mixed success before moving into Italy; and Africa, where Rome finally won the war. The First Punic War had ended in a Roman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scorpio (weapon)
The ''scorpio'' or scorpion was a type of Roman torsion siege engine and field artillery piece. It was described in detail by the early-imperial Roman architect and engineer Vitruvius in the 1st century BC and by the 4th century AD officer and historian Ammianus Marcellinus.Ammianus Marcellinus, ''Roman History'', XXIII:4. Design Two versions are known: a horizontal two-armed variety like a ballista and a one-armed, vertical version otherwise referred to as an ''onager''. The fourth century army officer and historian Ammianus Marcellinus witnessed the use of ''scorpiones'' during several engagements in the Persian wars of Constantius II, and described the one-armed version as synonymous with the ''onager'', with the vertical upraised arm as the 'scorpion's sting'. The complexity of construction and in particular the torsion springs (which the Romans referred to as ''tormenta'') led to great sensitivity to any variation in temperature or moisture, which limited their use. Wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polybius
Polybius (; grc-gre, Πολύβιος, ; ) was a Greek historian of the Hellenistic period. He is noted for his work , which covered the period of 264–146 BC and the Punic Wars in detail. Polybius is important for his analysis of the mixed constitution or the separation of powers in government, his in-depth discussion of checks and balances to limit power, and his introduction of "the people", which influenced Montesquieu's ''The Spirit of the Laws'', John Locke's ''Two Treatises of Government'', and the framers of the United States Constitution. The leading expert on Polybius for nearly a century was F. W. Walbank (1909–2008), who published studies related to him for 50 years, including a long commentary of his ''Histories'' and a biography. Early life Polybius was born around 200 BC in Megalopolis, Greece, Megalopolis, Arcadia (region), Arcadia, when it was an active member of the Achaean League. The town was revived, along with other Achaean states, a century before he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander The Great
Alexander III of Macedon ( grc, wikt:Ἀλέξανδρος, Ἀλέξανδρος, Alexandros; 20/21 July 356 BC – 10/11 June 323 BC), commonly known as Alexander the Great, was a king of the Ancient Greece, ancient Greek kingdom of Macedonia (ancient kingdom), Macedon. He succeeded his father Philip II of Macedon, Philip II to the throne in 336 BC at the age of 20, and spent most of his ruling years conducting a lengthy military campaign throughout Western Asia and ancient Egypt, Egypt. By the age of thirty, he had created one of the List of largest empires, largest empires in history, stretching from Greece to northwestern Historical India, India. He was undefeated in battle and is widely considered to be one of history's greatest and most successful military commanders. Until the age of 16, Alexander was tutored by Aristotle. In 335 BC, shortly after his assumption of kingship over Macedon, he Alexander's Balkan campaign, campaigned in the Balkans and reasserted control ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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