Bresnahan, T. J.Neihouse, A. I.Trent, Clarence E.2022-11-152022-11-151930http://hdl.handle.net/10919/11261124 unnumbered leaves (2 folded)application/pdfenIn CopyrightLD5655.V855 1930.B747Pendulum -- Design and constructionPhotoelectric cellsA novel, economic, and advantageous application of the photo-electric cellThesis