Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleA LECTURE DEMONSTRATION OF NEW APPARATUS.AuthorsKlopsteg, Paul E.PublicationSchool Science & Mathematics, 1930, Vol 30, Issue 5, p546ISSN0036-6803Publication typeArticleDOI10.1111/j.1949-8594.1930.tb02733.x