Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3755Chemical news office., 1932 |
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Strona 215
... surface of the mirror be roughened the reflected light will be diffused in all direc- tiins ; and if the walls and ceilings of a room be similarly irregular ( on a sufficiently large scale ) the reflected sound will be scattered , * Of ...
... surface of the mirror be roughened the reflected light will be diffused in all direc- tiins ; and if the walls and ceilings of a room be similarly irregular ( on a sufficiently large scale ) the reflected sound will be scattered , * Of ...
Strona 218
... surfaces about them to intensify the sound while the listeners pre- fer absorbent material in their neighbodr- hood . It is generally considered that the rever- beration time is independent of the positions of the absorbing material and ...
... surfaces about them to intensify the sound while the listeners pre- fer absorbent material in their neighbodr- hood . It is generally considered that the rever- beration time is independent of the positions of the absorbing material and ...
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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