Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3755Chemical news office., 1932 |
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Strona 218
... absorbing material and of the source of sound . In general , this statement is true , but there are some important exceptions . For instance , if the absorbing material is placed back under a balcony or in some other place where the ...
... absorbing material and of the source of sound . In general , this statement is true , but there are some important exceptions . For instance , if the absorbing material is placed back under a balcony or in some other place where the ...
Strona 219
... absorbing material the best results are obtained if the material is placed entirely in that portion of the audi- torium occupied by the audience , while the wall and ceiling around the stage are left untreated . Experience with existing ...
... absorbing material the best results are obtained if the material is placed entirely in that portion of the audi- torium occupied by the audience , while the wall and ceiling around the stage are left untreated . Experience with existing ...
Strona 223
... absorbing medium decreases exponen- tially as the distance travelled . The law is sometimes known as the Bougwer - Lambert law . It holds only for monochromatic radiation , and the ratio of the intensities at two given points is ...
... absorbing medium decreases exponen- tially as the distance travelled . The law is sometimes known as the Bougwer - Lambert law . It holds only for monochromatic radiation , and the ratio of the intensities at two given points is ...
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