Thomas Edison's generator for electric light at his home at Menlo Park, New Jersey, USA, 1879. Behind the doors is the 80 hp engine. The two vignettes (top) are Edison's improved form of JW Trowbridge's electric dynamometer, and Lord Kelvin's mirror galvanometer. From Scientific American. (New York, 1879).
World North and Central America United States New Jersey
Pixel Dimensions (W x H) : 2686x3892
File Size : 30,627kb