Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3755Chemical news office., 1932 |
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Strona 218
... seats at 0.25 , giving a net addition of 1,875 absorption units , and bringing the total absorption of the room with ... seating capacity desired . True , 218 The Chemical News . April 1 , 1932 .
... seats at 0.25 , giving a net addition of 1,875 absorption units , and bringing the total absorption of the room with ... seating capacity desired . True , 218 The Chemical News . April 1 , 1932 .
Strona 219
of space available or seating capacity desired . True , modern amplifying practice makes it possible to use a very ... seats the absorp-- tion of the room may be rendered nearly independent of the audience . more It has been found by ...
of space available or seating capacity desired . True , modern amplifying practice makes it possible to use a very ... seats the absorp-- tion of the room may be rendered nearly independent of the audience . more It has been found by ...
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absorbing absorption acid acoustic activity application Arts Association atom audience auditorium becomes bibliographies British cause ceiling cent Chemical chemistry coefficient complete contained cost cubic desired echo effect electricity electron element example excess existing experiment experimental expressed fact feet floor formation formula give given heat held hydrogen hydrogen ion importance increase industry intensity interest later less light lines London Manufacture March Marks material means measured metals methods million molecules necessary obtained Office optical ordinary organic organisation oxygen Patents plants Plaster possible present produced quantity references reflected reflected sound result reverberation Royal Sabine Science scientific seats Society solid solution sound space speaking specific spectrum square substances TABLE term theory tion total absorption Trade units University usual volume walls Watson weight window