ON ELECTRICAL CONDUCTORS

W H PREECE
1884 Minutes of the Proceedings of the Institution of Civil Engineers  
IN no branch of engineering has the mutual dependence and reaction between practice and theory been more beneficial than in the useful appliances of electricity. Without theory the rule-of-thumb telegraphist would have been stationary. Without practice the electrician would have been a dreamer. The practical difficulties of telegraphy incited the physicist to trace out the laws that govern the behaviour of this subtle Power of Nature, and the appearance of new facts has driven the practical
more » ... n the practical telegraphist into lines of inquiry and discovery. Physicists have been metamorphosed into practical engineers, while no telegraph-engineer * In 1848 a copper mire was put up between Paris and Rouen. Matthiessen's standard is 100 inches, weighing 100 grains, giving 0.1516 ohm at 60° Fahrenheit. Downloaded by [ UNIVERSITY OF IOWA LIBRARIES] on [16/09/16].
doi:10.1680/imotp.1884.21616 fatcat:ijbmq7jhznhonagnzk5km2elsq