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 guides. Baedeker would provide the text and Mair the finished product. The Baedeker Autoführer Verlag, Stuttgart was born. The slim guides called "Baedeker-Shell" guides were designed to fit into a man's jacket pocket or in the glove compartment of a car. The first ones covered Germany and were a huge success. Guides on other European countries followed in both German and English. Karl Friedrich was now operating on two fronts. He continued to produce city and regional guides from Malente and with the publication of his 1954 "Berlin" guide in German, English and French, the Baedeker brand had been well