growing mathematics reputation in Europe, paving the way for his success in intellectual and social circles in Paris a year later. In 1656 he began grinding his own lenses for telescopes with his brother Constantijn, leading to the invention of the two lens Huygenian eyepiece. His work with lenses helped him discover the Saturnian moon, Titan. Continued work on his telescope designs led to the discovery of the stellar components of the Orion nebula in 1656. By 1658, Huygen's interests in astronomy created
Flemish painter Jan van Eyck (c 1395-1441) was one of the most significant Northern Renaissance painters. He was employed under the auspices of John of Bavaria, ruler of Holland and subsequently Philip the Good, Duke of Burgundy. Van Eyck was one of the earliest artists to employ the technique of oil painting. He is known for the meticulous detail in his religious works and portraits. Ranking with his most famous paintings is The Man in a Red Turban 1433, (London, The National Gallery) . Considered