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The resulting wheeled tower or belfry remained a standard siege engine for over 2,000 years , until cannon made lofty walls useless for defense . A further Assyrian improvement was to combine the belfry with a battering ram .
Towers rose at intervals from all these walls . Greek historians who wrote of Babylon's walls as a Wonder of the World much exaggerated their height and length . Nevertheless , these fortifications made the city practically impregnable ...
At the eastern tip of Pharos , Ptolemaios ' architect Sostratos of Knidos ( -III ) erected a sky - scraping tower as a landmark for ships . This was the famous Lighthouse of Alexandria , one of the original Seven Wonders of the World .
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LibraryThing ReviewCrítica de los usuarios - PDCRead - LibraryThing
This was originally written in 1962, and is therefore is a little dated. Sprague de Camp has written a book all about the different civilisations and the technologies that that invented or acquired ... Leer comentario completo
LibraryThing ReviewCrítica de los usuarios - Schmerguls - LibraryThing
5609. The Ancient Engineers, by L. Sprague De Camp (read 21 Jan 2019) This book was first published in 1963 and hence its bibliography includes nothing after that date. It undertakes to tell of the ... Leer comentario completo
One The Coming of the Engineers
Three The Mesopotamian Engineers
Four The Greek Engineers
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