The Ancient Engineers |
Dentro del libro
Resultados 1-3 de 53
Página 5
... keep on bettering their inventions until they really work and to keep on promoting them until they persuade others to take them up . A rough idea of the percentage of inventors among mod- ern Americans can be obtained from the ...
... keep on bettering their inventions until they really work and to keep on promoting them until they persuade others to take them up . A rough idea of the percentage of inventors among mod- ern Americans can be obtained from the ...
Página 362
... keep- and - enceinte plan , fortified gatehouses , machicolation , and conical roofs on the turrets . rounding the whole ; and a large thick - walled round tower , the keep or donjon , for a last stand . The biggest keep of all was that ...
... keep- and - enceinte plan , fortified gatehouses , machicolation , and conical roofs on the turrets . rounding the whole ; and a large thick - walled round tower , the keep or donjon , for a last stand . The biggest keep of all was that ...
Página 364
L. Sprague de Camp. overrun , the defenders retired into the keep . As the keep had only one small door and was of such massive masonry that it could not be battered down , the defenders could hold out there as long as their provisions ...
L. Sprague de Camp. overrun , the defenders retired into the keep . As the keep had only one small door and was of such massive masonry that it could not be battered down , the defenders could hold out there as long as their provisions ...
Contenido
One The Coming of the Engineers | 1 |
Two The Egyptian Engineers | 18 |
Three The Mesopotamian Engineers | 46 |
Derechos de autor | |
Otras 9 secciones no mostradas
Otras ediciones - Ver todas
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