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.
Karl Baedeker appeared in 1861 after Karl Baedeker's death. However, in 1836 he published "The Traveller's Manual of Conversations" in English, German, French and Italian. The 352-page book also contained many useful Dutch expressions and vocabulary. The manual was founded on the works of Boldoni, Mad. de Genlis and others, acknowledged on the title pages, which were in both English and German, unusual then, but he was an astute businessman and primarily a bookseller at the time. Unusually, too, the German page was on the left and the traditional title page on the right was in English. Whereas the German title page