Karl Baedeker of 1000 i.e. 500 in German, 266 in English and 226 in French. He kept reviewing and revising this list regularly. Hinrichsen's referencing is akin to that of Ludwig Ritter von Köchel's index of Mozart's works, in as much as Baedeker guides are also referred to by their Hinrichsen number à la Köchel/Mozart. Alex W. Hinrichsen died on December 9, 2012 in Holzminden, Germany. His index remains the definitive bibliographical list of Baedeker travel guides published since Verlag Karl Baedeker was founded in 1827. He also produced valuable works of reference on Baedeker ephemera. Books and articles about the rise
Karl Baedeker (scientist) This was the first example of doping a semiconductor to change its properties and also the discovery of transparent conductive materials. He also observed a Hall effect in transparent copper iodide thin films that had the reverse sign to that in copper, an observation of what was later to be known as conduction by electron holes in semiconductors. This observation was critical in developing the theory of electron conduction in solids. Along with his graduate student Karl Steinberg, Baedeker studied the effect of varying concentration of iodine on the electrical properties of copper iodide. He also is credited with making