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Admired long after his death by the likes of Lord Rayleigh and Einstein, Thomas Young (1773 1829) was the definition of a polymath. By the age of fourteen he was proficient in thirteen languages, including Greek, Hebrew and Persian. After studies in Edinburgh, London, Gottingen and Cambridge he established himself as a physician in London, and over the course of his life made contributions to science, linguistics and music. He was the first to prove that light is a wave rather than molecular, his three-colour theory of vision was confirmed in the twentieth century, and his work in deciphering...

This classic book contains the original illustrations and is typeset for easy reading. Both Sides the Border is a book by the prolific British author, George Alfred (G. A.) Henty set in Medieval England. Henty's books are widely used by homeschool students to get a personal look at history. The four opening years of the fifteenth century were among the most stirring in the history of England. Owen Glendower carried fire and slaughter among the Welsh marches, captured most of the strong places held by the English, and foiled three invasions, led by the king himself. The northern borders were...