Which movement was begun in 1909 by Richard Schirrmann, a German schoolteacher, and Wilhelm Mnker, a conservationist?
Richard Schirrmann Richard Schirrmann Richard Schirrmann (15 May 1874 – 14 December 1961) was a German teacher and founder of the first youth hostel. Born in Grunenfeld (today Gronówko), Province of Prussia as the son of a teacher, Schirrmann studied to become a teacher himself. In 1895, he received his qualification, and was sent to Altena, Westphalia in 1903. In 1909, he first published his idea of an inexpensive accommodation for young people, after he noticed the lack of such places on a school trip when he had to spend the night in barns or village school buildings. Schirrmann received considerable support
Richard H. Wilhelm Richard H. Wilhelm Richard Herman Wilhelm (January 10, 1909 – August 6, 1968) was an American chemical engineer notable for developing a new method of fluid separation called chemical parametric pumping. Wilhelm was also notable for pioneering in the development of fluid beds, which according to Princeton University "revolutionized the petroleum-cracking process". Princeton University established Wilhelm Lectures in his honor. Wilhelm was a member of the National Academy of Engineering Fellow of the American Academy of Arts and Sciences, and a chairman of the department of chemical engineering at Princeton University. Princeton University called Wilhelm "an authority on chemical reaction