Sound: A Course of Eight Lectures Delivered at the Royal Institution of Great BritainLongmans, Green,, 1867 - 335 páginas |
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Página 12
... inch interior diameter . It passes through the floor to a room underneath this one , and * To converge the pulse upon the flame , the tube was caused to end in a cone . TRANSMISSION OF SOUND THROUGH TUBES . 13 thence through a 12 LECTURE I.
... inch interior diameter . It passes through the floor to a room underneath this one , and * To converge the pulse upon the flame , the tube was caused to end in a cone . TRANSMISSION OF SOUND THROUGH TUBES . 13 thence through a 12 LECTURE I.
Página 23
... the medium through which the wave passes . The elasticity of air is measured by the pressure which it sustains or can hold in equilibrium . At the sea - level this pressure is equal to that of a stratum of mercury about 30 inches high.
... the medium through which the wave passes . The elasticity of air is measured by the pressure which it sustains or can hold in equilibrium . At the sea - level this pressure is equal to that of a stratum of mercury about 30 inches high.
Página 24
... inches high . At the summit of Mont Blanc the barometric column is not much more than half this height ; and , consequently , the elasticity of the air upon the summit of the mountain is not much more than half what it is at the sea ...
... inches high . At the summit of Mont Blanc the barometric column is not much more than half this height ; and , consequently , the elasticity of the air upon the summit of the mountain is not much more than half what it is at the sea ...
Página 32
... inch , while the distance to which the motion is transferred during the time required by a ' to perform this small excursion may be many feet , or even many yards . If this point should not appear altogether plain to you now , it will ...
... inch , while the distance to which the motion is transferred during the time required by a ' to perform this small excursion may be many feet , or even many yards . If this point should not appear altogether plain to you now , it will ...
Página 53
... inch apart . I lay this bar of brass across them , permitting it to rest upon the edges , and , tilting the bar a little with my hand , set it in oscillation like a see - saw . After a time , if left to itself , it comes to rest . But ...
... inch apart . I lay this bar of brass across them , permitting it to rest upon the edges , and , tilting the bar a little with my hand , set it in oscillation like a see - saw . After a time , if left to itself , it comes to rest . But ...
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Palavras e frases frequentes
auditory nerve augmentation beats bell burner carbonic acid cause centre Chladni clarionet column of air condensation corresponding Crown 8vo damp density disc distance divides division Edition elasticity embouchure Eustachian tube experiment flame fork four fundamental tone glass harmonic hear heard heat Helmholtz higher tones human voice hydrogen illustrated inches instrument intensity interval lecture length light liquid membrane ments motion musical sound nodal lines nodes number of vibrations obtain octave open pipe organ-pipe orifice oscillate overtones particles pass pitch plate pressure produced prongs puffs pulses rapidity of vibration rarefaction rate of vibration ratio reed reflected rendered resonance resultant tone rotation sonorous wave square stopped pipe stretched string surface syren temperature tion tube tuning-fork tympanic membrane unison vein velocity in air velocity of sound ventral segments vibrating segments vibrating strings voice vols vowel wire Woodcuts
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