Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3755Chemical news office., 1932 |
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Strona 216
... intensity . If the reflected sound is retarded a little more it may happen that the two compressions coincide , producing an unusually loud sound . The most usual cause of such sound foci , how- ever , is an excessively curved wall or ...
... intensity . If the reflected sound is retarded a little more it may happen that the two compressions coincide , producing an unusually loud sound . The most usual cause of such sound foci , how- ever , is an excessively curved wall or ...
Strona 218
... intensity is low , the absorbing material will not be as effec- tive as if it were placed where the intensity is greater . There are also cases where between large parallel non absorbent surfaces the sound may be reflected back and ...
... intensity is low , the absorbing material will not be as effec- tive as if it were placed where the intensity is greater . There are also cases where between large parallel non absorbent surfaces the sound may be reflected back and ...
Strona 223
... intensity of the main y - rays in the radium ( B + C ) spectrum after they have passed through 1.6 cm . of lead is calculated by assuming the A22 law , and it is shown that the intensities are not in contradiction to an effective wave ...
... intensity of the main y - rays in the radium ( B + C ) spectrum after they have passed through 1.6 cm . of lead is calculated by assuming the A22 law , and it is shown that the intensities are not in contradiction to an effective wave ...
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