Sound: A Course of Eight Lectures Delivered at the Royal Institution of Great BritainLongmans, Green,, 1867 - 335 páginas |
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Página ix
... to whose skill as a draughtsman I am continually indebted . The wood engravings were executed by Mr. Branston , and the portrait of Chladni by Mr. H. Adlard . CONTENTS . LECTURE I. The Nerves and Sensation - Production.
... to whose skill as a draughtsman I am continually indebted . The wood engravings were executed by Mr. Branston , and the portrait of Chladni by Mr. H. Adlard . CONTENTS . LECTURE I. The Nerves and Sensation - Production.
Página 63
... executed in precisely the same time as the vibrations of the column of air , or of the tongue in the other . The same holds good for the human voice . If a string and a voice yield the same note , it is because the vocal chords of the ...
... executed in precisely the same time as the vibrations of the column of air , or of the tongue in the other . The same holds good for the human voice . If a string and a voice yield the same note , it is because the vocal chords of the ...
Página 66
... executed by the disc in any given time . By pushing the button a or b it is in my power to throw this wheelwork into or out of action , and thus to start or to suspend , in a moment , the process of recording . Here , finally , is a ...
... executed by the disc in any given time . By pushing the button a or b it is in my power to throw this wheelwork into or out of action , and thus to start or to suspend , in a moment , the process of recording . Here , finally , is a ...
Página 67
... executed with it various important experiments . Let us now make our syren sing . Pressing the key m , I open the outer series of apertures in the cylinder c , and , working the bellows , cause the air to impinge against the disc ...
... executed with it various important experiments . Let us now make our syren sing . Pressing the key m , I open the outer series of apertures in the cylinder c , and , working the bellows , cause the air to impinge against the disc ...
Página 68
... revolution , therefore , we had 16 puffs of air , or 16 waves of sound . Multiplying 1,440 by 16 , we obtain 23,040 as the number of vibrations executed by RATE OF VIBRATION DETERMINED BY THE SYREN . 69 the 68 LECTURE II .
... revolution , therefore , we had 16 puffs of air , or 16 waves of sound . Multiplying 1,440 by 16 , we obtain 23,040 as the number of vibrations executed by RATE OF VIBRATION DETERMINED BY THE SYREN . 69 the 68 LECTURE II .
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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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