Category:An Account of the Magnetical Machine Contrived by the Late Dr. Gowin Knight, F. R. S. and Presented to The Royal Society, by John Fothergill, M. D. F. R. S. (1776)
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http://rstl.royalsocietypublishing.org/content/66.toc: John Fothergill, M.D. F. R. S. - XLI. An account of the magnetical machine contrived by the late Dr. Gowin Knight, F.R.S. and presented to The Royal Society, by John Fothergill, M.D. F.R.S Phil. Trans. R. Soc. Lond. 1776 66 591-599; doi:10.1098/rstl.1776.0042
Media in category "An Account of the Magnetical Machine Contrived by the Late Dr. Gowin Knight, F. R. S. and Presented to The Royal Society, by John Fothergill, M. D. F. R. S. (1776)"
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Gowin-knight-magnet.jpg 4,615 × 2,665; 1.95 MB