In the third episode of Genius of Britain, major scientific personalities of the 19th century are put into the spotlight. Personalities of such high calibre, motivation, and vivid aspirations that their works yielded many of the modern conveniences that we so luckily can avail of. Electricity, roads, railways, even evolution are but a few of the many grand ideas and concepts that contributed one way or another to the actualization of many of the modern advances in technology. James Dyson gives us the life account of Michael Faraday, son of a blacksmith who, amidst explosive poverty, fought through the overwhelming odds and invented one of the most essential innovations of all times – the switch – owing this much to his fanaticism with electricity. Kathy Sykes divulges the expanses of Lord Kelvin’s accomplishments including the formulation of the laws of thermodynamics and the invention of the first transatlantic telegraph cable among his other 70 patents.