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Sir George Biddell Airy was an English mathematician and astronomer, Astronomer Royal from 1835 to 1881. His many achievements include work on planetary orbits, measuring the mean density of the Earth, a method of solution of two-dimensiona... |
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Jeremiah Dixon was an English surveyor and astronomer who is best known for his work with Charles Mason, from 1763 to 1767, in determining what was later called the Mason–Dixon line.
Dixon was born in Cockfield, near Bishop Auckland, Cou... |
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Ludovico Sforza was Duke of Milan from 1489 until his death. A member of the Sforza family, he was the fourth son of Francesco Sforza. He was famed as a patron of Leonardo da Vinci and other artists, and presided over the final and most pro... |
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