Walter Weizel "Ruprecht-Karls-Universität Heidelberg". He received his doctorate in physical chemistry at Heidelberg, under Max Trautz. He switched form chemistry to physics to work on the quantum mechanics of molecules as a fellow of the "Notgemeinschaft der Deutschen Wissenschaft" (NG; Emergency Association of German Science) at the "Universität Rostock". He completed his Habilitation in 1929. After Habilitation, Weizel worked briefly at "Badische Anilin- und Sodafabrik" (BASF, Baden Aniline and Soda Factory) at Ludwigshafen. Then, during 1931, he had a Rockefeller fellowship to the University of Chicago. From late in 1931, Weizel was an "ordentlicher Professor" (ordinarius professor) of theoretical physics at the
Soda bread and reliably, without requiring the time-consuming skilled labor and temperature control needed for traditional yeast breads. During the early years of European settlement of the Americas, settlers and some groups of Indigenous peoples of the Americas used soda or pearl ash, more commonly known as potash (pot ash) or potassium carbonate, as a leavening agent (the forerunner to baking soda) in quick breads. In the US, soda breads were first publicised by Amelia Simmons as a quick and cheap method of bread making in her book "American Cookery", published in 1796. By 1824, "The Virginia Housewife" by Mary Randolph was