A graphic study of sounds waves emitted by singing tubes (1920)
Lapp, Claude Jerome · leaf 10
y wavethat the transmitter diaphragm would pick up. Second Method; This method was suggested by the principleemployed by Professor D.C. Miller in his phonodeik. The optical retfleeting system, however, was entirely different, being at the sametime much simpler. The diaphragm of derrratype paper was… … 3 attached perpendicularly four or five silk fibers, the other end ofwhich was held by a very fine conical aperiodic spring. Acrossthe diaphragm, 0.476 cm. above and parallel to it, was very tightlystretched one strand of a three strand silk thread. This waspassed 0.154 cm. from the perpendicular…
Sound-waves · Theses
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
