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Scientific American, Vol. 58, No. 7 (1888) (1888)
leaf 10
the fork is at an angle of 45° with the axis|is due to the fact that when the building of the monu- of the resonating tube. Then the sound of one arm of nent was originally begun, it was never contemplated that the vibrations of the air in the resonant tube not only affect the auditory apparatus,… … the vase slightly in one direction or gineering feat, and one that it will take USED AS A a great convulsion of the earth to affect. the other, so as to cause the ear to © 1888 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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