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 cover most of the popular tourist destinations in the world. Over 150 guides have been published already and the list keeps growing, as well as the number of languages in which they are published. In Britain, the guides have been published in collaboration with the British Automobile Association (The AA) and in the USA by Macmillan Travel, a Simon & Schuster Macmillan company. The Freiburg Baedeker branch was acquired by the German publisher Langenscheidt following the death of Eva Baedeker. In 1987, both Baedeker branches, the Langenscheidt operation in Freiburg and the Baedeker Autoführer Verlag in Stuttgart operated by the