The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 19
... jet planes ; more agreeable generally , although distract- ing to some people , the whir of machinery and ticking of ... stream of very small , invisible particles , which , after mov- ing through the air , are able somehow to affect the ...
... jet planes ; more agreeable generally , although distract- ing to some people , the whir of machinery and ticking of ... stream of very small , invisible particles , which , after mov- ing through the air , are able somehow to affect the ...
Page 34
... jet airplane is an unusually intense source of sound in which the total acoustic power is proportional to something like the fifth power of the jet- stream velocity . The annoyance of this is evident to any- one who lives in the ...
... jet airplane is an unusually intense source of sound in which the total acoustic power is proportional to something like the fifth power of the jet- stream velocity . The annoyance of this is evident to any- one who lives in the ...
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