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Dr Susie Mitchell hears the story of 'Scotland's Forgotten Einstein', James Clerk Maxwell. Maxwell's lifelong curiosity about the world and his gift for solving complicated puzzles led him to a string of discoveries. He was the first person to demonstrate a way of taking colour photos, and he worked out what the rings of Saturn were made of, before any powerful telescopes or spacecraft were around to get a good look. But his most important achievement was the discovery of electromagnetism. His prediction of electromagnetic waves led onto every type of gadget we now use that involves signals - from mobile phones and wifi equipment to radio, X rays and microwave ovens. Photograph courtesy of the Master and Fellows of Trinity College Cambridge.