Sound, 8 lectures1869 |
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Página 61
... shorten as the motion of the fork is expended . It remains , however , a straight line as long as the glass is held in a fixed position . But I now suddenly turn the glass so as to make the beam travel from left to right over the screen ...
... shorten as the motion of the fork is expended . It remains , however , a straight line as long as the glass is held in a fixed position . But I now suddenly turn the glass so as to make the beam travel from left to right over the screen ...
Página 78
... shortened , a greater number of them being crowded into the ear in a given time . During its retreat we have a ... shortening their luminiferous waves , and becoming green or blue . The ingenuity of this theory is extreme , but its ...
... shortened , a greater number of them being crowded into the ear in a given time . During its retreat we have a ... shortening their luminiferous waves , and becoming green or blue . The ingenuity of this theory is extreme , but its ...
Página 130
... would be heard simultaneously . By damping the proper point and imparting the proper shock , we can still further subdivide the rod , as shown in fig . 52 . CHLADNI'S TONOMETER . 131 And now let us shorten our 130 LECTURE IV .
... would be heard simultaneously . By damping the proper point and imparting the proper shock , we can still further subdivide the rod , as shown in fig . 52 . CHLADNI'S TONOMETER . 131 And now let us shorten our 130 LECTURE IV .
Página 131
... shortened , the tone is higher ; and by con- tinuing to shorten it , the speed of vibration is augmented , until finally the sound becomes painfully acute . These musical vibrations differ only in rapidity from the grosser oscillations ...
... shortened , the tone is higher ; and by con- tinuing to shorten it , the speed of vibration is augmented , until finally the sound becomes painfully acute . These musical vibrations differ only in rapidity from the grosser oscillations ...
Página 161
... shortening the brass wire we cause it to emit a note of the same pitch as that emitted by its fellow . You hear both notes now sounding in unison . The sound - pulse travels through these 23 feet of iron wire , and through these 15 feet ...
... shortening the brass wire we cause it to emit a note of the same pitch as that emitted by its fellow . You hear both notes now sounding in unison . The sound - pulse travels through these 23 feet of iron wire , and through these 15 feet ...
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Términos y frases comunes
aërial augmentation beats bell burner carbonic acid caused centre Chladni column of air condensation conduit corresponding Crown 8vo density diameter disc dissonance distance divides division Edition elasticity embouchure emitted experiments flame fork fundamental tone gases glass harmonic hear heard Helmholtz human voice hydrogen illustrated inches instrument intensity interval lecture length light liquid longitudinal vibration major third membrane meters motion musical intervals musical sound nodal lines nodes number of vibrations obtained octave odd numbers open pipe organ-pipe orifice oscillation overtones particles pass pendulum perfect pitch placed plate pressure produced prongs propagation pulses rapidity rarefaction rate of vibration ratio reed rendered resonance resultant tone rod fixed rotation screen shorten shown in fig sonorous wave square stretched string surface syren tion tube tuning-fork tympanic membrane unison vein velocity of propagation velocity of sound ventral segments vibrating segments vols wire Woodcuts
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