Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 857
... beats , recent measures of the velocity of light , goniometers , convex mirrors , and nodal points of lenses . BELFAST , March , 1838 . NOTE PREFIXED TO FIRST EDITION . IN the present Part , the chapters relating to Consonance and ...
... beats , recent measures of the velocity of light , goniometers , convex mirrors , and nodal points of lenses . BELFAST , March , 1838 . NOTE PREFIXED TO FIRST EDITION . IN the present Part , the chapters relating to Consonance and ...
Página 859
... beats , • · Beats , 888 , pp . 865-893 . pp . 893 , 894 . • p . 894 . pp . 894 , 895 . p . 895 . CHAPTER LXIII . NUMERICAL EVALUATION OF SOUND . Loudness , pitch , and character . Pitch depends on frequency , 889. Musical intervals ...
... beats , • · Beats , 888 , pp . 865-893 . pp . 893 , 894 . • p . 894 . pp . 894 , 895 . p . 895 . CHAPTER LXIII . NUMERICAL EVALUATION OF SOUND . Loudness , pitch , and character . Pitch depends on frequency , 889. Musical intervals ...
Página 860
... Beats of harmonics , 931. Beating notes must be near in pitch , 932. Imperfect concord , 933. Resultant tones , 934 , 935 , pp . 941-946 . OPTICS . CHAPTER LXVII . PROPAGATION OF LIGHT . Light . Hypothesis of æther , 936. Excessive ...
... Beats of harmonics , 931. Beating notes must be near in pitch , 932. Imperfect concord , 933. Resultant tones , 934 , 935 , pp . 941-946 . OPTICS . CHAPTER LXVII . PROPAGATION OF LIGHT . Light . Hypothesis of æther , 936. Excessive ...
Página 891
... beats . It is for a similar reason that , when a large bell is vibrating , a person in its centre hears the sound as only moderately loud , while within a short distance of some portions of the edge the loudness is intolerable . 887 ...
... beats . It is for a similar reason that , when a large bell is vibrating , a person in its centre hears the sound as only moderately loud , while within a short distance of some portions of the edge the loudness is intolerable . 887 ...
Página 892
... beats , and the notes are said to beat together . If we have the power of tuning one of the notes , we shall find that as they are brought more nearly into unison , the beats become slower , and that , as the departure from unison is ...
... beats , and the notes are said to beat together . If we have the power of tuning one of the notes , we shall find that as they are brought more nearly into unison , the beats become slower , and that , as the departure from unison is ...
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Términos y frases comunes
achromatic analyser angle of incidence beam body bright lines called centimetres centre coincidence colours concave mirror conjugate foci convex convex lens crystal curvature denote diameter direction distance employed equal experiment eye-piece flame focal length frequency of vibration fundamental note glass harmonics Hence Iceland-spar incident ray index of refraction interval inverted law of sines lens lenses luminous point magnifying power medium metres minimum deviation nearly node normal number of vibrations object object-glass oblique observer obtained octave optical ordinary parallel particles pencil perpendicular pipe pitch placed plane mirror plate polarization portion position principal axis principal focus prism produced propagation radius rarefaction ratio reflected rays refrangibility represented retina rotation screen seen side slit solar spectra spectrum spherical string subtends surface telescope tion tone traversing tube undulation velocity of sound vertical vibrations vibrations per second violet virtual image visual angle wave-front wave-length waves