Sound: A Course of Eight Lectures Delivered at the Royal Institution of Great Britain |
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Page 15
... fall upon any one of the row of persons who occupy the front seat in the gallery . Removing the candle , and putting the watch , w , fig . 6 , in its place , the person on whom the image of the candle fell , distinctly hears the ticking ...
... fall upon any one of the row of persons who occupy the front seat in the gallery . Removing the candle , and putting the watch , w , fig . 6 , in its place , the person on whom the image of the candle fell , distinctly hears the ticking ...
Page 18
... falls of the Orinoco resembles the beat- ing of a surf upon a rocky shore , being much louder by night than by day . This is not due to the greater stillness of the night , for the hum of insects and the roar of beasts rendered the ...
... falls of the Orinoco resembles the beat- ing of a surf upon a rocky shore , being much louder by night than by day . This is not due to the greater stillness of the night , for the hum of insects and the roar of beasts rendered the ...
Page 19
... Falling snow has been often referred to as offering a great hindrance to the passage of sound , but I imagine it to be less obstructive than is usually supposed . Sound appears to make its way freely between the falling flakes . On the ...
... Falling snow has been often referred to as offering a great hindrance to the passage of sound , but I imagine it to be less obstructive than is usually supposed . Sound appears to make its way freely between the falling flakes . On the ...
Page 20
... fall of Terni , repeats fifteen . The tick of a watch may be heard from one end of the abbey church of St. Albans to the other . In Gloucester Cathedral , a gallery of an octagonal form conveys a whisper seventy - five feet across the ...
... fall of Terni , repeats fifteen . The tick of a watch may be heard from one end of the abbey church of St. Albans to the other . In Gloucester Cathedral , a gallery of an octagonal form conveys a whisper seventy - five feet across the ...
Page 21
... falls ; me if when my ear is at the focus the balloon be removed , the ticks are enfeebled ; on re- placing the balloon their force αρ 0 " is restored . The lens , in fact , enables me to hear the ticks distinctly when they are ...
... falls ; me if when my ear is at the focus the balloon be removed , the ticks are enfeebled ; on re- placing the balloon their force αρ 0 " is restored . The lens , in fact , enables me to hear the ticks distinctly when they are ...
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Common terms and phrases
auditory nerve augmentation beats bell carbonic acid cause centre Chladni 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 observed obtain octave open pipe organ-pipe orifice oscillate overtones particles pass pitch plate Post 8vo pressure produced prongs puffs pulse 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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