Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3755Chemical news office., 1932 |
Z wnętrza książki
Wyniki 1 - 3 z 3
Strona 213
... necessary fixed weights of an airship have been de- ducted from the lifting power of an airship with 5 million cubic feet of gas the remain- ing life available is at present some 50 per cent . greater with hydrogen than with helium ...
... necessary fixed weights of an airship have been de- ducted from the lifting power of an airship with 5 million cubic feet of gas the remain- ing life available is at present some 50 per cent . greater with hydrogen than with helium ...
Strona 216
... necessary in order to locate the particular portion of the room which is responsible for the production of a dead spot . Often this can be found only by a cut - and - try experiment , as it is not possible to predict the path of ...
... necessary in order to locate the particular portion of the room which is responsible for the production of a dead spot . Often this can be found only by a cut - and - try experiment , as it is not possible to predict the path of ...
Strona 218
... necessary , and in this case the mean of the upper and lower curves , about 1.4 seconds , will be a suitable value . This would re- quire a total absorption of A 0.05 V 5,000 1.4 = 3,570 absorption units . t Since the untreated room ...
... necessary , and in this case the mean of the upper and lower curves , about 1.4 seconds , will be a suitable value . This would re- quire a total absorption of A 0.05 V 5,000 1.4 = 3,570 absorption units . t Since the untreated room ...
Inne wydania - Wyświetl wszystko
Kluczowe wyrazy i wyrażenia
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