#OTD in 1831.
Michael Faraday first experimentally demonstrated electromagnetic induction, leading to the formulation of the law of induction named after him.
https://en.wikipedia.org/wiki/Faraday%27s_law_of_induction
Books about or by Michael Faraday at PG:
https://www.gutenberg.org/ebooks/search/?query=Michael+Faraday&submit_search=Go%21