The Ancient Engineers |
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Página 61
... less effective than the same number of men . mounted on horses . After the time of Alexander the Great , chariots went out of use for fighting , albeit they were kept for private carriages , governmental mail carts , and racing vehicles ...
... less effective than the same number of men . mounted on horses . After the time of Alexander the Great , chariots went out of use for fighting , albeit they were kept for private carriages , governmental mail carts , and racing vehicles ...
Página 124
... less than a point ( 114 ° less than a right angle ) and then only if the 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 ...
... less than a point ( 114 ° less than a right angle ) and then only if the 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 ...
Página 186
... less strength than a semicircular arch . So , to protect straight arches , Roman builders developed another trick : the relieving arch . This was an arc of bricks ( usually less than a full semicircle ) im- bedded in the wall over the ...
... less strength than a semicircular arch . So , to protect straight arches , Roman builders developed another trick : the relieving arch . This was an arc of bricks ( usually less than a full semicircle ) im- bedded in the wall over the ...
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 Assyrian 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 kings Ktesibios Lake land later Leonardo machine 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