Maxwell’s equations
Beginning with ‘On Physical Lines of Force’, published in May 1861, Maxwell demonstrated that magnetism, electricity and light are different manifestations of the same fundamental laws. His 1865 paper, ‘A Dynamical Theory of the Electromagnetic Field’, showed this through what became known as ‘Maxwell’s Equations’, which paved the way for current technologies in radio, television, mobile phones, the internet and GPS.
Einstein’s own work on relativity and quantum theory relied on Maxwell’s discoveries. ‘One scientific epoch ended and another began with James Clerk Maxwell’, he said.
Maxwell also demonstrated the world’s first colour photograph. With the help of Thomas Sutton, Lecturer in Photography at King’s, he separated the colour spectrum into red, green and blue and made a photograph of a tartan ribbon. Earlier he had shown how the rings of Saturn were made up of individual solid particles rotating in separate concentric orbits at different speeds.