Michael Faraday ( Newington Butts , Surrey , 22 September 1791 â `` Hampton Court , Surrey , 25 August 1867 ) was an English chemist and physicist . Michael Faraday , FRS ( 22 September 1791 â `` 25 August 1867 ) was an English chemist and physicist ( or natural philosopher , in the terminology of the time ) who contributed to the fields of electromagnetism and electrochemistry .