A History of Technology: The industrial revolution, c. 1750 to c. 1850Clarendon Press, 1958 |
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Page 394
... circle constructed in 1840 for the Paris Observatory [ 6 ] . The division of this great circle was a masterpiece of precision . Gambey operated as follows . The circle was placed horizontally , and the points of its vertical axis were ...
... circle constructed in 1840 for the Paris Observatory [ 6 ] . The division of this great circle was a masterpiece of precision . Gambey operated as follows . The circle was placed horizontally , and the points of its vertical axis were ...
Page 395
... circle by strictly constant angles . The division of the circle was effected with the aid of a specially constructed dividing - engine [ 7 ] . The platform for this machine had itself been toothed by an original rectification process ...
... circle by strictly constant angles . The division of the circle was effected with the aid of a specially constructed dividing - engine [ 7 ] . The platform for this machine had itself been toothed by an original rectification process ...
Page 401
... circle [ 14 ] . This instrument ( figure 222 ) was made by the French engineer Lenoir . About ten years later the same engineer thought out the dual - telescope repeating circle for terrestrial observa- tions . FIGURE 222 - Borda's ...
... circle [ 14 ] . This instrument ( figure 222 ) was made by the French engineer Lenoir . About ten years later the same engineer thought out the dual - telescope repeating circle for terrestrial observa- tions . FIGURE 222 - Borda's ...
Contents
GLASS by L M ANGUSBUTTERWORTH Director The Newton Heath Glass | 12 |
TELEGRAPHY by G R M GARRATT Deputy Keeper Department of Electrical | 22 |
FISH PRESERVATION by C L CUTTING Officer in Charge Humber | 44 |
Copyright | |
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agricultural beam became Boulton Boulton and Watt bridge Britain British built canal carbon carried cast iron chemical clay coal Coalbrookdale coke construction copper crops cylinder D. E. Woodall diameter E. J. HOLMYARD early eighteenth century engine England English Europe fallow farming figure fish France French furnace glass heat horizontal husbandry Ibid important improved inches industrial revolution introduced invention inventor J. F. Horrabin John John Smeaton later lathe London machine machinery manufacture mechanical metal method mill mineral mines Newcomen Newcomen engine nineteenth century obtained operation oxide Paris patent Photograph by courtesy pipe piston plate porcelain practical produced pump river road rollers rotation Rotherham plough salt screw sewers shaft ships silk Smeaton Staffordshire steam steam-engine steel stones sulphuric acid surface telegraph tion vertical ware water-wheels watermills Watt whales wheel wooden wrought iron