William Thomson, 1st Baron Kelvin William Thomson, 1st Baron Kelvin William Thomson, 1st Baron Kelvin, (26 June 1824 – 17 December 1907) was a Scots-Irish mathematical physicist and engineer who was born in Belfast in 1824. At the University of Glasgow he did important work in the mathematical analysis of electricity and formulation of the first and second laws of thermodynamics, and did much to unify the emerging discipline of physics in its modern form. He worked closely with mathematics professor Hugh Blackburn in his work. He also had a career as an electric telegraph engineer and inventor, which propelled him into the public eye
History of the Jews in 19th-century Poland The Jewish Enlightenment, Haskalah, began to take hold in Poland during the 19th century, stressing secular ideas and values. Champions of Haskalah, the Maskilim, pushed for assimilation and integration into Russian culture. At the same time, there was another school of Jewish thought that emphasized traditional study and a Jewish response to the ethical problems of anti-semitism and persecution, one form of which was the Musar movement. Though the Jews in the Pale were generally poorer and less educated than in other areas, they were still part of the debate over the future of Judaism in the 19th century. By