The New Encyclopędia BritannicaEncyclopędia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 21
Definition of decibel Meaning of pure tone The longitudinal nature of sound waves Concept of excess pressure Newton's law of sound propa- gation Absence of dispersion Spherical. for this quantity is the decibel ( abbreviated dB ) . If ...
Definition of decibel Meaning of pure tone The longitudinal nature of sound waves Concept of excess pressure Newton's law of sound propa- gation Absence of dispersion Spherical. for this quantity is the decibel ( abbreviated dB ) . If ...
Page 26
... sound waves passing through it . The transmission pattern of pass and attenuation is indeed very similar to that shown in Figure 5. Here the ratio S1 / S2 of the cross - sectional areas of the constricted and expanded tubes plays the ...
... sound waves passing through it . The transmission pattern of pass and attenuation is indeed very similar to that shown in Figure 5. Here the ratio S1 / S2 of the cross - sectional areas of the constricted and expanded tubes plays the ...
Page 27
... sound called molecular acoustics , by which sound measure- ments are able to give insight into the interaction of molecules in fluids . Diffraction and scattering . When a sound wave strikes an obstacle of finite size , some of the sound ...
... sound called molecular acoustics , by which sound measure- ments are able to give insight into the interaction of molecules in fluids . Diffraction and scattering . When a sound wave strikes an obstacle of finite size , some of the sound ...
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19th century acoustic African agricultural America Angola animals architecture Asian Bolivia Brazil British Buddha Buddhist Burma Burmese Cambodia Cape carved central centre Chinese classical coast Colombia colonial court culture dance drama early east eastern economic European example figures forest frequency groups hertz Hindu images important India Indonesia industrial influence instruments Javanese Khmer king kingdom labour land language literature major ment metres mountain movement Mughal Muslim nāga northern organization painting Pāli pattern percent performance period Peru plays poets political population Portuguese produced rāga Rāmāyaṇa range recording region religious republics river Sanskrit sculpture shrines social sonata sonata form sound waves South Africa South Indian Southeast Asia southern sovereignty Soviet śrutis structure stupa style Tamil temple territory Thailand theatre tion tones trade tradition tribes ture urban Urdu velocity vibrations Vietnam village wayang West Western yakṣa