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 525
diapasons whose times are as three to four, representing the chord of afourth. The first of these appears when the initial difference of phaseis zero; the succeeding ones correspond to differences of phase equal tothe fractions ^-, yL, J., and i of the larger vibration; that is to say, theymake… … Lissajouss Comparator. The apparatus here described is adapted to exhibit the vibration fig-ures to several observers at once. But as it may sometimes be desira- MECHANICAL EFFECTS OF VIBRATIONS. 509 ble to study the vibrations of bodies to which mirrors cannot be attached,as for instance, of…
Machinery · Scientific apparatus and instruments
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