By Ian McNeil
* 22 sections hide the total box of the background of expertise and every part summarises the advance of its topic from the earliest instances to the current day* Written with no pointless jargon* 2 vast indexes of Names and issues* Usefully illustrated with a hundred and fifty black & white images and line drawings to provide an explanation for key advances`Contain[s] an unlimited quantity of trustworthy info over a really huge box. it's definitely a piece of which I shall myself make common use ... it merits to discover a spot ... in each reference library.' - instances greater schooling Supplement`The assurance is great ... a most useful single-volume resource which for its comprehensiveness and straightforwardness of reference will earn its position in either expert and basic reference collections.' - Reference Reviews`Informative and entire, outstanding in its insurance ... covers each element of expertise from the Stone Age to the gap Age ... will definitely aid readers to get a grip on and believe of a tremendous variety of topics ... a useful and sensible addition to most dept bookshelves or libraries.' - New Civil Engineer`The authors represented during this e-book are to be congratulated for his or her readable and trustworthy surveys of the previous and current prestige of the foremost parts the place mankind has harnessed technology for the creation of worthwhile items and processes.' - selection
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Additional info for An Encyclopaedia of the History of Technology
All these called for further specialists to produce them. These in turn needed further tools with which to work and added to the number of specialists who had to be fed. It has been suggested that copper ore was mined at Mount Sinai as early as 5000 BC and 2000 years later in Oman in the south of Arabia. These are respectively some 1400 and 2000km (875–1250 miles) from Mesopotamia, a long haul for the unrefined ore and a powerful incentive towards the invention of the wheel. It was about 3500 BC that the wheel was first added to a primitive sledge at Erech in Sumeria.
Around 3000 BC bellows were developed, at first from the whole skins of sheep, goats or pigs, or from clay or wooden pots topped with a flexible membrane of leather. Copper ore was not to be found in sufficient quantity in the ‘fertile crescent’ where it was first used. Thus traders and carriers were required using, at first, pack animals and later wheeled vehicles, then riverboats and sea-going ships. All these called for further specialists to produce them. These in turn needed further tools with which to work and added to the number of specialists who had to be fed.
The Savannah, a steam paddleship carrying a full spread of sail, crossed the Atlantic from New York to Liverpool in 27 1/2 days in 1819, but only steamed for 85 hours.