Which 17th century French philosopher, mathematician, scientist, and writer showed, by using geometric construction and the law of refraction, that the angular radius of a rainbow is 42 degrees?
René Descartes René Descartes ( March 31, 1596 – February 11, 1650), also known as Cartesius, was a noted French philosopher, mathematician, and scientist.
The game of Roulette was created by which mathematician, physicist, and Catholic philosopher in the 17th century in his search for a perpetual motion machine?
Which 17th century French playwright is still celebrated and popular for his witty satires, among them The School for Wives, The School for Husbands and The Imaginary Invalid?
Which 13th century philosopher, linguist, empirical scientist, writer and Franciscan Friar known as Doctor Mirabilis, was known for his mediaeval Latin work "Opus Major"?
