Elementary Lessons on Sound |
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Page 10
... rotating bows of parchment or horsehair passing over rollers , may be named . ' A current of air directed against a string has long been known to be competent to excite it , and the Æolian harp has been constructed on this principle ...
... rotating bows of parchment or horsehair passing over rollers , may be named . ' A current of air directed against a string has long been known to be competent to excite it , and the Æolian harp has been constructed on this principle ...
Page 14
... rotation . This occurs whether the fundamental tone or an upper partial be elicited . It is evident that the string ... rotate it instead of communi- cating purely transverse oscillations . It was consequently necessary to adopt strings ...
... rotation . This occurs whether the fundamental tone or an upper partial be elicited . It is evident that the string ... rotate it instead of communi- cating purely transverse oscillations . It was consequently necessary to adopt strings ...
Page 32
... rotating spindle , and touched while in rotation with a wetted excitor . The sounds thus obtained are continuous , and of peculiarly luscious , though. Fig . 15. - Section of a bell . Fig . 16. - Proof of the vibration of a. 32 [ CHAP ...
... rotating spindle , and touched while in rotation with a wetted excitor . The sounds thus obtained are continuous , and of peculiarly luscious , though. Fig . 15. - Section of a bell . Fig . 16. - Proof of the vibration of a. 32 [ CHAP ...
Page 71
... rotated on its stem , it will be found that there are four positions in each rotation in which the note is distinctly ... rotating the fork over the mouth of a consonating jar or tube . If two perfectly similar stopped organ - pipes be ...
... rotated on its stem , it will be found that there are four positions in each rotation in which the note is distinctly ... rotating the fork over the mouth of a consonating jar or tube . If two perfectly similar stopped organ - pipes be ...
Page 79
... rotation , and attaching to it a counter or indicator showing the number of revolu- tions in a given period . Thus , giving the wheel 600 teeth , and rotating it forty times in a second , he could obtain 48,000 collisions in each second ...
... rotation , and attaching to it a counter or indicator showing the number of revolu- tions in a given period . Thus , giving the wheel 600 teeth , and rotating it forty times in a second , he could obtain 48,000 collisions in each second ...
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Common terms and phrases
acoustical alteration apparatus arytenoid cartilages bassoon beats bell cartilages cavity clarinet comma consonant corresponding density determined diameter diapason digitals disc distance double elastic enharmonic epiglottis equal equal temperament excited experiments Fahrenheit fifth fixed flame flat flute fork friction fundamental note give given harmonic harmonium heard heat Helmholtz human voice inch instrument intervals keyboard keys length longitudinal Lord Rayleigh lower major sixth major third means membrane metal method metres Minor Sixth minor third monochord motion musical sound musical tones named nodes number of vibrations oboe observed obtained octave ordinary organ orifice pendulum perfect perfect fifths pitch plate prime tone produced prongs ratio reed resonance rotating scale schismas segments semitone sharp sharpened simple siren sonorous source of sound string temperament temperature termed tonometer triad tube tuned tuning-fork unison upper partial tones velocity of sound vibration number violin wave wave-length wire