An electrical method of studying sound waves (1920)
Owens, Thurston Dorr · leaf 17
the mirroroscillatiens. The method used in this thesis is an electrical method involv-ing an application of the oscillograph. The preliminary wcrk wasdone on a type of instrument known as a lecture room oscillograph*This particular instrument was manufactured by H.G. Crane of whicha picture is here… … The arc lamp is designed to operate cn direct current, using5 x 350m.nr.. carbons. For the best results the positive carbonshould be cored. About 5 amperes at 110 volts is required to ope-rate the lamp successfully. A pin hole diaphragm allows a small beamof light to pass from the lamp through…
Sound-waves · Electronic instruments · Theses
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
