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 in English, the handbook on "The Rhine" (from Switzerland to Holland), a guide in German on Italy ("Ober-Italien"), the first of a series on Italy, which his father had planned and one in French, also on Italy ("Italie septentrionale"). Ernst Baedeker died unexpectedly on 23 July 1861 of sunstroke in Egypt and his younger brother, Karl, assumed charge of the publishing house. 1861−1877: Karl Baedeker II (1837−1911) continued the work started by his brother Ernst. In addition to the ongoing revision of existing guides, he published 14 new guides: four in German, seven in English and three in French. viz.