Karl Baedeker (scientist) Karl Baedeker (scientist) Karl Wilhelm Sali Baedeker (3 February 1877 – 6 August 1914) was a German physicist, and a professor at the University of Jena. He was the grandson of Karl Baedeker, the founder of the eponymous travel guide publishing house, and the son of Fritz Baedeker (1844 - 1925), who ran the same company from 1869 until his death in 1925 (see Baedeker). One of his scientific discoveries was that the resistivity of cuprous iodide (CuI) depended on its stoichiometry. Thin films of the material became much more conductive when exposed to iodine vapor; the effect was reversible.
Baedeker Karl Baedeker II worked with his younger brother Fritz, who joined the firm in 1869 as a partner and became the general manager. In 1877 (according to the source cited here) Karl, afflicted with an incurable mental condition, moved to a sanatorium near Esslingen am Neckar where he remained for the rest of his life. 1869−1925: Under Fritz Baedeker (1844−1925) the company grew rapidly. In 1870, the Baedeker bookselling business was sold. In 1872, he moved the company's headquarters from Koblenz to Leipzig, a major move forward, as most of the reputable major German publishing houses were located there. He