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 Mairs publishing group, were merged and housed together in Ostfildern/Kemnat as "Karl Baedeker GmbH" with a branch in Munich. The ownership of the new venture was split down the middle between Langenscheidt and Mairs. In 1997, Mairs Geographischer Verlag, now known as , became the 100% owner of Verlag Karl Baedeker, along with all rights attached to Karl Baedeker's name and firm. The new English Baedekers produced by MairDumont dispensed with the "Allianz" logo in the title, with the German editions doing the same in 2013. This marked the beginning of a new era in the appearance and content of