A History of Technology: The industrial revolution, c. 1750 to c. 1850Clarendon Press, 1958 |
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Page 600
... measurements to determine the shape of the Earth . From arcs measured in various parts of the world ( figure 326 ) , seven principal figures for the flattening of the spheroid at the poles , varying from 1 / 293.5 to 1 / 300-8 , were ...
... measurements to determine the shape of the Earth . From arcs measured in various parts of the world ( figure 326 ) , seven principal figures for the flattening of the spheroid at the poles , varying from 1 / 293.5 to 1 / 300-8 , were ...
Page 601
... measurement with a 100 - ft steel chain ; and , after overlapping rods of Riga pine had proved too unstable in varying humidity , the final measurement was made with glass tubes . Roy's base of verification was measured in 1787 ...
... measurement with a 100 - ft steel chain ; and , after overlapping rods of Riga pine had proved too unstable in varying humidity , the final measurement was made with glass tubes . Roy's base of verification was measured in 1787 ...
Page 607
... measured on Hounslow Heath in 1784 , by means of glass rods , with an error of only 1/158 000 ( about 2 inches in the whole length of 27 404 ft , over 5 miles ) . After a delay of three years while Ramsden completed his 3 - ft ...
... measured on Hounslow Heath in 1784 , by means of glass rods , with an error of only 1/158 000 ( about 2 inches in the whole length of 27 404 ft , over 5 miles ) . After a delay of three years while Ramsden completed his 3 - ft ...
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