50.4 MB (7.0 MB compressed)
3479 x 5059 pixels
29.5 x 42.9 cm ⏐ 11.6 x 16.9 in (300dpi)
SHEILA TERRY / SCIENCE PHOTO LIBRARY SHEILA TERRY / SCIENCE PHOTO LIBRARY
One of the electric motors devised by Pierre Gustav Froment (1815-1865), French inventor and engineer. From 1844 he pioneered the design of electric motors capable of providing the motive power for machinery and for other industrial purposes. Though at this stage electric motors were relatively inefficient, they were an important technological development, offering a possible alternative to the steam, wind and water power sources of the nineteenth century.
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