The Claw of Archimedes is a weapon that he is said to have designed in order to defend the city of Syracuse in a siege. The claw consisted of a crane-like arm from which a large metal grappling hook was suspended. When the claw was dropped onto an attacking ship the arm would swing upwards‚ lifting the ship out of the water and possibly sinking it. Archimedes may have had it inspired by his law of the lever: How did it work exactly? After using heavy stones to drive back the Romans from the bows
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launch systems; 1) the chain lift‚ 2) the catapult and 3) wheel launch. The traditional launching system is called a chain lift. The chain lift method consists of chain dogs (hooks) that hook onto a long length of chain or chains that are used to lift the coaster to its highest peak. As the coaster goes up the lift hill‚ it is building potential energy that will be turned into kinetic energy on the way back down. Another method of launch is the catapult launch that builds up an abundance of potential
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the city gates. Arrow-firing catapults could also be installed on the top of the tower and be utilized to attack the defenders at the wall. Once the city walls were breached the siege towers could then be wheeled inside the city and used for futher attacks upon city rooftops. Catapults Torsion catapults are believed to have been invented by the Phonecians. There were two varieties of them‚ mainly differentiated by size‚ the light and the heavy. The light catapult was utilized to hurl small projectiles
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The Roman army was very mighty. Because of this they were able to expand their territory. At the height of their power they were able to conquer what we now call Wales‚ Spain‚ France‚ the Middle East‚ Greece‚ most of Germany‚ and the northern coast of Africa. Historians view the roman army as an extremely effective fighting machine. The lowest level soldier in the Roman army was a legionnaire. 5000 to 6000 legionnaires made up a legion. They were trained to fight in a disciplined and coordinated
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Andrew Beverly Psychoanalysis in Joyce’s “An Encounter” In James Joyce’s short story “An Encounter‚” a young boy recounts an adventure he had when skipping school with a classmate. Throughout the story‚ many Freudian themes are present‚ including Freud’s stages of psychosexual development and subconscious narration that contains sexual imagery. These are exhibited in passages that contain phallic symbols and provocative speech. When considering Freudian stages present in the short story‚ the most
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Gladiator is a historical film‚ which was released on May the forth in 2000. The movie was set in the year 180AD. The filming was held from December 1998- May 1999 and the whole creation took three years. Gladiator is about a powerful general named Maximus‚ who is asked to be emperor over the emperor’s son. This causes his son Commodus to kill his father in rage. Commodus becomes Emperor and tries to assassinate Maximus and his family in revenge. Maximus escapes Commodus and tries to regain the
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"Simple Machines"‚ the ancient Egyptians used levers to lift stones to build their pyramids and ramps to raise them to the top. Also he states that in Roman times‚ stones were tossed at enemies using catapults. The catapults used levers to fling the stones‚ and pulleys to pull down the arm of the catapult. The purpose of all of these simple machines is to lessen the amount of work or effort that you must put into a job. The pulley‚ inclined plane‚ gear‚ spring‚ and lever are good examples of simple
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How castle developed in the middle ages? In the middle ages‚ castles were very important to show power and defend your country. The first castles were made out of wood with little land and barely any defence. Castles became more important when the Normans started to invade Britain. Over the years as castles developed they got bigger and stronger. The battle of Hastings in 1066 marked the start of William the Conquerors reign. Once he was crowned King of England he began to build a network
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This paper has been designed to detail the different types of weapons used by the people of Ancient Rome. It includes observations on development of Roman weaponry as well as its great variety of structure and uses. This will include‚ in addition‚ the inherence of earlier civilizations of weaponry My paper will attempt to answer the following questions; What weapons did the Romans consider important? What material was used to forge these weapons? How are they classified? How important was their role
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There are many functions of roller coasters such as the chain lift‚ catapult-launch lift etc. The first component is the chain lift the chain lift is a series of connected carts that move on tracks. The train has no engine nor power source the power is gravity and momentum. To build up this momentum(potential energy) the train needs to get to the top of the hill. The lifting mechanism is a long length of chain that runs up the hill under the track. The chain is a fasten loop and the chain on the
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