James Clerk Maxwell was a physicist whose genius provided the 'second great unification' in physics after Newton. He developed Maxwell's Equations, which for the first time unified electricity, magnetism, and light into the single field of electromagnetism. He mathematically proved that light is an electromagnetic wave. His work laid the foundations for all modern technology, including radio, television, and radar. Einstein once described Maxwell’s work as the 'most profound and the most fruitful that physics has experienced since the time of Newton.' Maxwell also produced the first durable color photograph and made vital contributions to the kinetic theory of gases.