I found this book really interesting. It is a biography of Thomas Young, famous for both his modulus of elasticity, and for the double slit experiment which established the wave behaviour of light.
Young was a both a polymath and an autodidact, and his achievements are much wider than just the two items named after him. He was the first person to correctly explain how the eye worked, and he was instrumental in the deciphering of the Rosetta Stone.
Andrew Robinson's book deals not only with Young's triumphs, but also with the frustrations of being a polymath on the edge of a time when specialisation was on its way in. Previously, scientists were gentlemen of means who had the time and the money to dabble in any number of fields that interested them.
After Young, scientific research became a field for paid professionals with narrow specialities. Polymaths tended to be good at a large number of things, but not the absolute best in any of them. Of course, their ability to bring together disparate fields also enabled them to found new branches of science and the arts, but such achievements were usually not recognised until after their lifetime.
Robinson has produced a very readable book about someone whose achievements have been overshadowed by those who came later.