Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 520
seven, &c; while dull or muffled tones, such, for instance.as those of stopped organ-pipes, derive their character from overtoneshaving ratios derived from two and its powers, four, eight, and so on.The brilliancy of the piano-forte is obtained by causing the hammersto strike the strings at a… … ACOUSTICS HELMHOLTZS RESONATOR. 503 When the air within a confined space, as a tube, is set into vibration,there is produced a clang, and not a tone. The fundamental tone in theclang- is that which corresponds to the smallest number of vibrationsper second of which the mass of air is capable. In an…
Machinery · Scientific apparatus and instruments
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