By Ian McNeil
* 22 sections hide the complete box of the background of know-how and every part summarises the improvement of its topic from the earliest occasions to the current day* Written with no pointless jargon* 2 large indexes of Names and subject matters* Usefully illustrated with one hundred 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 large 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 larger schooling Supplement`The insurance is superb ... a most respected single-volume resource which for its comprehensiveness and simplicity of reference will earn its position in either professional and normal reference collections.' - Reference Reviews`Informative and complete, outstanding in its insurance ... covers each element of expertise from the Stone Age to the gap Age ... will surely aid readers to get a grip on and consider of a major variety of matters ... a useful and useful addition to most dept bookshelves or libraries.' - New Civil Engineer`The authors represented during this publication are to be congratulated for his or her readable and trustworthy surveys of the prior and current prestige of the foremost parts the place mankind has harnessed technology for the creation of helpful items and processes.' - selection
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Extra info for An Encyclopaedia of the History of Technology
Hornbeam was the most popular wood until lignum vitae, the wood of the guaiacum tree, a native of South America, began to be imported in the eighteenth century. Helical gears were developed by Robert Hooke in 1666. There being then no machinery for cutting such teeth, he built them up from a series of laminations which were staggered or progressively displaced when the faces of the teeth were then filed smooth. Ten years later Hooke devised the universal joint named after him and contributed much to later mechanical engineering.
Watermills did not increase greatly in number until the fourth and fifth centuries AD, towards the end of the era of the Roman Empire. By the time of the Domesday Book, completed in AD 1086, this survey was to record over 5600 in use in England alone, mostly used for corn milling but possibly a few for ore crushing and for driving forge hammers. In building, the Romans used cranes frequently fitted with a treadmill to turn the windlass, the rope running in pulleys. The most powerful of them were of about 6 tonnes’ lifting capacity.
He pursued these goals for much of his long life, but unfortunately he was ahead of his time. His machines were purely mechanical and the precision needed in their manufacture was almost beyond even such an excellent craftsman as he employed— Joseph Clement. He died a disillusioned man, but left behind him thousands of drawings that contain the basic principles upon which modern computers are built. Gears, cams and ratchets could not do what transistors or even the diode valve was capable of. The computer had to wait for the age of electronics.
An Encyclopaedia of the History of Technology by Ian McNeil