Sound: A Course of Eight Lectures Delivered at the Royal Institution of Great BritainLongmans, Green,, 1867 - 335 páginas |
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Página 6
... force exerted between them ; and the more rapid this delivery and recoil , or in other words the greater the elasticity of the air , the greater is the velocity of the sound . But if air be thus necessary to the propagation of sound ...
... force exerted between them ; and the more rapid this delivery and recoil , or in other words the greater the elasticity of the air , the greater is the velocity of the sound . But if air be thus necessary to the propagation of sound ...
Página 11
... force which first urges it , is opposed by the elastic force of the air , which finally stops the particle , and causes it to recoil . At a certain point of its excursion , the velocity of the particle is a maximum . The intensity of ...
... force which first urges it , is opposed by the elastic force of the air , which finally stops the particle , and causes it to recoil . At a certain point of its excursion , the velocity of the particle is a maximum . The intensity of ...
Página 21
... force αρ a ' is restored . The lens , in fact , enables me to hear the ticks distinctly when they are perfectly inaudible to the unaided ear . How a sound - wave is thus converged may be compre- hended by reference to fig . 9. Let m n ...
... force αρ a ' is restored . The lens , in fact , enables me to hear the ticks distinctly when they are perfectly inaudible to the unaided ear . How a sound - wave is thus converged may be compre- hended by reference to fig . 9. Let m n ...
Página 23
... force of recoil was therefore feeble in com- parison with the force of impact , and insufficient to undo what the latter had accomplished . Having thus dealt with the reflection , the refraction , and the inflection of sound , we must ...
... force of recoil was therefore feeble in com- parison with the force of impact , and insufficient to undo what the latter had accomplished . Having thus dealt with the reflection , the refraction , and the inflection of sound , we must ...
Página 30
... force which resists compression , and which produces expansion , is the elastic force of the air . Thus an external pressure squeezes the air - particles together ; their own elastic force holds them asunder , and the particles are in ...
... force which resists compression , and which produces expansion , is the elastic force of the air . Thus an external pressure squeezes the air - particles together ; their own elastic force holds them asunder , and the particles are in ...
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Palavras e frases frequentes
auditory nerve augmentation beats bell carbonic acid cause centre Chladni clarionet column of air condensation corresponding Crown 8vo 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 odd numbers 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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