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" Hence the rule has been derived, that the number of beats per second is equal to the difference of the number of vibrations per second of the two sounds. "
Nature - Side 211
redigert av - 1876
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Nature, Volum 13

Sir Norman Lockyer - 1876 - 558 sider
...to the illustration of the coffin-makers, and will now assume that the slower workman, B, makes loo blows in a minute, whereas the quicker workman, A,...it from one or two simple examples, have omitted to sec a curious theoretical difficulty that attends it. Let us go a step further, and suppose the higher...
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The Theory of Sound in Its Relation to Music

Pietro Blaserna - 1876 - 212 sider
...strengthen, sometimes weaken each other ; beats are thus obtained, the number of which per second corresponds to the difference of the number of vibrations per second of the two notes produced by the sirens. If the twelve holes of the two discs be kept in action, and the blower...
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The Theory of Sound in Its Relation to Music

Pietro Blaserna - 1876 - 256 sider
...strengthen, sometimes weaken each other ; beats are thus obtained, the number of which per second corresponds to the difference of the number of vibrations per second of the two notes produced by the sirens. If the twelve holes of the two discs be kept in action, and the blower...
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Practical Physics: Molecular Physics & Sound

Frederick Guthrie - 1879 - 180 sider
...more frequent. 45. Determine rate of loaded fork with monochord (23), knowing that of unloaded. Show that the number of beats per second is equal to the difference between the numbers of vibrations per second of the two forks. 46. Increase the load on one fork till...
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A Dictionary of Music and Musicians (A.D. 1450-1889) by Eminent ..., Volum 1

George Grove - 1879 - 802 sider
...places where the waves counteract each other, and therefore two beats in each second. Hence the rule that the number of beats per second is equal to the difference between t/ie rates of vibration of the notes. ' It is found practically that it is not necessary for...
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A Dictionary of Music and Musicians (A.D. 1450-1880) by Eminent ..., Volum 1

George Grove - 1880 - 778 sider
...places where the waves counteract each other, and therefore two beats in each second. Hence the rule that the number of beats per second is equal to the difference between tlte rates of vibration of tke notes. It is found practically that it is not necessary for...
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Introductory Course of Natural Philosophy for the Use of High Schools and ...

Adolphe Ganot - 1881 - 550 sider
...general, beats are produced by two musical sounds of nearly the same pitch emitted at the same time. The number of beats per second is equal to the difference of the rates of vibration. Beats are frequently heard in the sound of church bells, and in the lower octaves...
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Deaf Mutism: A Clinical and Pathological Study

James Kerr Love, William Hall Addison - 1896 - 398 sider
...alternate increase and diminution in volume, is produced. This is called the beating of the tones, and the number of beats per second is equal to the difference of the vibration number of the two tones. F1o. 8. — OEGAN TONOMETER FOE TESTING FOR APPRECIATION FOR DIFFERENCES...
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Physics: The Student's Manual for the Study Room and Laboratory

Le Roy Clark Cooley - 1897 - 480 sider
...the component sounds differ very little ill pitch, — that is, in vibration rates. It has been found that the number of beats per second is equal to the difference in the vibration rates of the two beating sounds. But the ear cannot distinctly separate more than...
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Physics for High School Students

Henry Smith Carhart, Horatio Nelson Chute - 1901 - 464 sider
...subsidence of sound must occur twenty times during the second, and twenty beats are produced. Therefore, the number of beats per second is equal to the difference of the vibration rates of the two sounds. . VIII. PITCH. 204. Musical Sounds are those which are pleasant...
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