The Nation's Schools, Količina 45Michael Vincent O'Shea McGraw Hill, 1950 |
Iz vsebine knjige
Zadetki 1–3 od 85
Stran 58
... sound below 800 to 1200 cycles per second and is usually a cone type with which PUBLISHER WRITER JOURNALIST COMMERCIAL ART all are familiar . The other part radiates all of the sound between this " cross- over frequency " of 800 to 1200 ...
... sound below 800 to 1200 cycles per second and is usually a cone type with which PUBLISHER WRITER JOURNALIST COMMERCIAL ART all are familiar . The other part radiates all of the sound between this " cross- over frequency " of 800 to 1200 ...
Stran 77
... Sound effects are identical with the original . Yes , your 16mm sound films projected with the RCA " 400 " achieve that true - to - life feeling . Screen images , too , are at their brilliant best , natural looking , full of snap , in ...
... Sound effects are identical with the original . Yes , your 16mm sound films projected with the RCA " 400 " achieve that true - to - life feeling . Screen images , too , are at their brilliant best , natural looking , full of snap , in ...
Stran 14
... Sound Conditioned . Acousti - Celotex ceiling tile stops sound reverberation before it starts ! Maintains beneficial quiet and comfort in hallways , lunch rooms , gymnasiums and study halls as well as libraries and auditoriums . Modern ...
... Sound Conditioned . Acousti - Celotex ceiling tile stops sound reverberation before it starts ! Maintains beneficial quiet and comfort in hallways , lunch rooms , gymnasiums and study halls as well as libraries and auditoriums . Modern ...
Vsebina
THE MAGAZINE OF BETTER SCHOOL ADMINISTRATION | 87 |
Impact of Television on Schools and Home | 35 |
23 | 80 |
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