Heinrich Gustav Magnus
(1802–70) chemist and physicist. In 1831 he became lecturer and in 1834 professor of physics and technology at the University of Berlin. A brilliant and highly popular teacher, Magnus introduced the seminar and the teaching laboratory and was influential in the science of his time. The scope of his interests was broad; he was the first to prepare a platino-ammonium compound (Magnus’s green salt) and several acids and their salts. From his study of projectiles was developed the theory of the “Magnus effect,” the lateral force on rotating cylinders in air currents. His other investigations included studies in thermoelectricity, electrolysis, and vapor pressure.
Karl Marx Came to Berlin in 1836 and stayed until 1841. Studied philosophy
and law at Berlin University, where he came under the influence of the ideas of Hegel. His teachers included Friedrich Karl von Savigny and Eduard Gans. He lived in Schützenstrasse. Became acquainted with
Bettina von Arnim who he once invited to his home in Trier. After Wilhelm 1 came to power in 1862,
he felt safe enough to return