Scottish education in the nineteenth century world. His students founded practical chemistry at Aberdeen soon after. William Thomson, 1st Baron Kelvin was appointed to the chair of natural philosophy at Glasgow aged only 22. His work included the mathematical analysis of electricity and formulation of the first and second laws of thermodynamics. By 1870 Kelvin and Rankine made Glasgow the leading centre of science and engineering education and investigation in Britain. At Edinburgh, major figures included David Brewster (1781–1868), who made contributions to the science of optics and to the development of photography. Fleeming Jenkin (1833–85) was the first professor of engineering at the university and
Jim Crow laws early as 1892 in the title of a "New York Times" article about Louisiana requiring segregated railroad cars. The origin of the phrase "Jim Crow" has often been attributed to "Jump Jim Crow", a song-and-dance caricature of blacks performed by white actor Thomas D. Rice in blackface, which first surfaced in 1832 and was used to satirize Andrew Jackson's populist policies. As a result of Rice's fame, "Jim Crow" by 1838 had become a pejorative expression meaning "Negro". When southern legislatures passed laws of racial segregation directed against blacks at the end of the 19th century, these statutes became known