The Ancient EngineersDoubleday, 1963 - 408 páginas This book is about those whose genius enabled the Egyptians to build their pyramids, the Phoenicians to cross stormy seas, the Romans to erect magnificent public buildings--that this carefully researched and fascinatingly written account of the advance of early technology has been written.Mr. de Camp describes the methods used by early irrigators, architects, and military engineers to build and maintain structures to serve their rulers' wants. He tells, for example, how the Pharaohs erected obelisks and pyramids, how Nebuchadnezzar fortified Babylon, how Dionysios' ordnance department invented the catapult, how the Chinese built the Great Wall, and how the Romans fashioned their roads, baths, sewers, and aqueducts. He recounts many intriguing anecdotes: an Assyrian king putting up no-parking signs in Nineveh; Plato inventing a water clock with an alarm to signal the start of his classes; Heron of Alexandria designing a coin-operated holy-water fountain; a Chinese emperor composing a poem to be inscribed on a clock invented by one of his civil servants. |
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Página 104
... ships of a wholly new type . These were ships with a single bank of oars , but with four or five men on each oar . These galleys had on each side a frame or outrigger called an apostis , in which the oars were pivoted . These new ships ...
... ships of a wholly new type . These were ships with a single bank of oars , but with four or five men on each oar . These galleys had on each side a frame or outrigger called an apostis , in which the oars were pivoted . These new ships ...
Página 124
... ship is handy , with a deep keel ( to keep it from sliding sideways ) and not too much upperworks . Also , the sail must not be too baggy . The best that modern sailing ships can do is two points ( 221⁄2 ° less than a right angle ) into ...
... ship is handy , with a deep keel ( to keep it from sliding sideways ) and not too much upperworks . Also , the sail must not be too baggy . The best that modern sailing ships can do is two points ( 221⁄2 ° less than a right angle ) into ...
Página 165
... ships were stripped of valuables and abandoned . With no crews to pump the water out of the bilges , they slowly settled by leakage until they went under . The remains of these marvelous ships , alas , were destroyed in the spring of ...
... ships were stripped of valuables and abandoned . With no crews to pump the water out of the bilges , they slowly settled by leakage until they went under . The remains of these marvelous ships , alas , were destroyed in the spring of ...
Contenido
One The Coming of the Engineers | 1 |
Two The Egyptian Engineers | 18 |
Three The Mesopotamian Engineers | 46 |
Derechos de autor | |
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Términos y frases comunes
Agrippa Alexandria ancient aqueducts Arabs arch Archimedes architect Aristotle armor army Athens Babylon became began brick bridge bronze builders building built Byzantine called canal castle catapults centuries China Chinese civilization classical columns conquered Demetrios dome early Egypt Egyptian emperor Empire engineering Europe feet fire Frontinus galleys gear Greek Hadrian Hellenistic Hence Herodotos Heron Heron of Alexandria High Middle Ages horse houses Imhotep India invention iron irrigation kings Ktesibios Lake land later Leonardo mechanical medieval Mediterranean Mesopotamia Mesopotamian Middle Ages miles mill modern Mongols Muslim Nemi ships oars palaces Persian Philon Philon of Byzantium Phoenicians piers pipes probably Ptolemaios pyramid Renaissance river roads Roman Rome roof rowers sail Sennacherib shaft ships side siege statue stone structure temple took tower Trajan treadwheel tunnel turned vault Vitruvius wall water clock water wheel wooden