René Laennec17811826French physician and musician who invented the stethoscope, revolutionizing medical diagnosis
Siméon Denis Poisson17811840French mathematician, mechanician, and physicist who advanced statistics, analytical mechanics, and predicted the Arago spot
David Brewster17811868Scottish astronomer, mathematician, physicist, and inventor known for his work in physical optics, including the discovery of Brewster's angle and the invention of the kaleidoscope