A Treatise on Acoustics in Connection with Ventilation: And an Account of the Modern and Ancient Methods of Heating and VentilationD. Van Nostrand, 1872 - 103 páginas |
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Página 6
... equally charged and " one fired at the top of a high mountain and the other “ in a valley , the one fired below in the heavy air may " be heard above , while the one fired in the higher air " will not be heard below ; owing to its ...
... equally charged and " one fired at the top of a high mountain and the other “ in a valley , the one fired below in the heavy air may " be heard above , while the one fired in the higher air " will not be heard below ; owing to its ...
Página 8
... equally swiftly , so as to be carried through equal spaces in equal time . From this property it follows that all sounds , whether they be loud or low , grave or acute , move equally swiftly ; the softest whisper making equal speed with ...
... equally swiftly , so as to be carried through equal spaces in equal time . From this property it follows that all sounds , whether they be loud or low , grave or acute , move equally swiftly ; the softest whisper making equal speed with ...
Página 42
... equally so for large aerial spaces . Art teaches us to create proper proportions , and this very æsthetical feeling requisite to do so , should at once put a stop to those low pro- portioned ceilings which always form an eyesore to the ...
... equally so for large aerial spaces . Art teaches us to create proper proportions , and this very æsthetical feeling requisite to do so , should at once put a stop to those low pro- portioned ceilings which always form an eyesore to the ...
Página 53
... . Now , is it not easy to comprehend that if the air in a church or any other public build- ing is heated equally , and the ventilation good , the diffusion of sound will be more equal throughout every part ACOUSTICS : 53.
... . Now , is it not easy to comprehend that if the air in a church or any other public build- ing is heated equally , and the ventilation good , the diffusion of sound will be more equal throughout every part ACOUSTICS : 53.
Página 54
... equally distributed , so that no one individual , placed at a cer- tain point , shall alone hear the orator , but large num- bers placed at different points shall hear him equally distinctly . The ages of antiquity have done nothing to ...
... equally distributed , so that no one individual , placed at a cer- tain point , shall alone hear the orator , but large num- bers placed at different points shall hear him equally distinctly . The ages of antiquity have done nothing to ...
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A Treatise on Acoustics in Connection with Ventilation Alexander Saeltzer Vista previa limitada - 2023 |
Términos y frases comunes
acoustics aerial space air draft altar ancients apsis architects arrangement assist sound basilica become Brevet calculated Caldarium carbonic acid cause ceiling chancel clear cloth concentrated condensed connection consequence construction crowded house cupola density direct distance distinct draft echoes edition effect elasticity Engineer enters equally escape example exhaled air experiments extended flow flues force fresh air gain galleries halls hear heated air height higher Hypocaustum Hypsometry Illustrated impure air influence inner atmosphere intelligible sound introduced Iron large churches less lithographic lower strata material method musical nature nave notice number of seats oblong form outer air practical produce proper proportion proscenium Protestant churches prove public buildings pulpit quicksilver reflection rise roof rotary movement saloon side aisles sound rays stove strata of air temperature theatres theory Thomas Curtis tion tones transept Treatise TRUSS BRIDGES U. S. Navy upper upwards voice volume of air walls warming spring window