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 138
... pipes , which stop up the openings of the pipes and do not allow that which the air has forced into the vessel to escape Pistons , smoothly turned and treated with oil , are inserted into the cylinders from above ; and thus confined ...
... pipes , which stop up the openings of the pipes and do not allow that which the air has forced into the vessel to escape Pistons , smoothly turned and treated with oil , are inserted into the cylinders from above ; and thus confined ...
Página 197
... pipe is bad for the health , for the lead goes into solution in the form of poisonous salts . The Ro- mans were not entirely ignorant of this fact . Vitruvius wrote : water is much more wholesome from earthenware pipes than from lead pipes ...
... pipe is bad for the health , for the lead goes into solution in the form of poisonous salts . The Ro- mans were not entirely ignorant of this fact . Vitruvius wrote : water is much more wholesome from earthenware pipes than from lead pipes ...
Página 199
... pipes to their houses or secretly bored holes into the water channels and tanks and laid their own pipes . Under the Principate , the water commissioners seem to have given up trying to distinguish between " eminent citizens " entitled ...
... pipes to their houses or secretly bored holes into the water channels and tanks and laid their own pipes . Under the Principate , the water commissioners seem to have given up trying to distinguish between " eminent citizens " entitled ...
Contenido
One The Coming of the Engineers | 13 |
Two The Egyptian Engineers | 28 |
Three The Mesopotamian Engineers | 53 |
Derechos de autor | |
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Términos y frases comunes
Agrippa Alexandria ancient aqueducts Arabic arch Archimedes architect Aristotle armor army Assyrian Athens Babylon became began brick bridge bronze builders building built Byzantine called canal castle catapult centuries China Chinese civilization classical columns conquered Demetrios dome early Egypt Egyptian emperor Empire engineering Europe feet fire Frontinus galleys gear Greece Greek Hadrian harbor Hellenistic Hence Herodotos Heron Heron of Alexandria High Middle Ages horse houses Imhotep India invention iron irrigation kings Ktesibios Lake land later Leonardo machine mechanical medieval Mediterranean Mesopotamia Mesopotamian Middle Ages miles mill modern Mongols mounted Muslim oars palaces Persian Philon Philon of Byzantium Phoenicians piers pipes Plinius probably pyramid river roads Roman Rome roof rowers sail Sennacherib shaft ships side siege statue stone structure temple took tower Trajan treadwheel tunnel turned vault vessel Vitruvius wall water clock water wheel wind wooden