English chemist, Michael Faraday discovers the influence of a magnetic field on polarized light during an experiment on September 13, 1845, when he observed that when the electromagnet was turned on, the polarization of the light changed.
His discover came to be known as the "Faraday effect". Among his many interests, Faraday was also active in what would now be called environmental science, or engineering. He investigated industrial pollution at Swansea and was consulted on air pollution at the Royal Mint. In July 1855, Faraday wrote a letter to The Times on the subject of the foul condition of the River Thames,. More
