Sound

aerial agitated atmosphere audible augmented beats bell burner carbonic acid cause centre column of air condensation consonance Consonance and Dissonance corresponding density direction disk dissonance distance divided echoes effect elasticity experiments figure fork fundamental tone gases glass hear heard heat Helmholtz Hence illustrated impulses inches instrument intensity interval layers length light liquid major third membrane ment miles Montlhéry motion musical intervals musical sound nodal lines nodes number of vibrations observed obtained octave organ-pipe orifice oscillation overtones particles pass pendulum pipe pitch placed plate produced Prof prongs pulses rapidity rarefaction rates of vibration ratio reach reed reflected rendered resonance resultant tone rotation screen sensitive flame siren sonorous wave sound-wave South Foreland square stretched string surface temperature tion Trinity House tube tuning-fork tympanic membrane unison vein velocity of sound ventral segments vibrating segments Villejuif whistle wire