His second paper in the same year was on magnetism and he then, still in the year 1876, published On the rotation of the plane of polarisation of light by reflection from the pole of a magnet in the Proceeding of the Royal Society. He had already begun to contribute to Maxwell 's theory and, as well as theoretical contributions, he was conducting experiments in electromagnetic theory.
Kanyang ikalawang papel sa parehong taon ay on-akit at siya pagkatapos, pa rin sa taong 1876, publish Sa pag-ikot ng eroplano ng polarisation ng ilaw sa pamamagitan ng pagninilay-nilay mula sa poste ng isang magneto sa pagdinig ng Royal Society. He had na sinimulan ng kontribusyon sa Maxwell 's theory at, pati na rin ang panteorya kontribusyon, siya ang pagsasagawa ng mga eksperimento sa electromagnetic theory.