William Rosen, The Most Powerful Idea in the World: A Story of Steam, Industry and Invention (Chicago: University of Chicago Press, 2012), 137.
12
Robin McKie, «James Watt and the Sabbath Stroll That Created the Industrial Revolution», The Guardian, May 29, 2015.
13
Stephen S. Hall, «The Age of Electricity», in Inventors and Discoverers: Changing Our World, ed. Elizabeth L. Newhouse (Washington, D.C.: National Geographic Society, 1988).
